Skocz do pozycji: 1.

Tytuł:

Modelling of Unmanned Aerial Vehicle – Tricopter
Modelowanie bezzałogowego statku latającego typu tricopter

Autorzy:

Źrebiec, J.

Powiązania:

https://bibliotekanauki.pl/articles/282190.pdf

Data publikacji:

2016

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

UAV modelling
flight dynamics
tricopter
BLDC
dynamika lotu
modelowanie UAV
bezzałogowy statek latający

Opis:

This paper presents detailed models of small aerial unmanned vehicle’s subsystems like propeller, BLDC motor or Li–poly batery. Furthermore, more accurate dynamic model of Tricopter is described. This, multi–system model can be used to synthesize pecise controller which may have the advantage in hazardous situations.
W niniejszym artykule zaprezentowano modele poszczególnych podsystemów wchodzących w skład bezzałogowych statków latających. Opisano między innymi zespół napędowy składający się z silnika bezszczotkowego (BLDC) i śmigła oraz akumulator litowo-polimerowy. Dodatkowo zaproponowano dokładniejszy model dynamiki lotu tricoptera. Przytoczone modele można wykorzystać do syntezy bardziej optymalnego regulatora, który może mieć przewagę w krytycznych sytuacjach.

Źródło:

Automatyka / Automatics; 2016, 20, 1; 7-25
1429-3447
2353-0952

Pojawia się w:

Automatyka / Automatics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Kryteria wyboru bezzałogowych statków powietrznych do zadań inspekcji i transportu
Unmanned Air Vehicle selection criteria for inspection and transport tasks

Autorzy:

Kubat, M.
Smyczyński, P.
Granosik, G.

Powiązania:

https://bibliotekanauki.pl/articles/276203.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów

Tematy:

BSP
bezzałogowe pojazdy latające
transport
inspekcja
hybrydowe BSP
UAV
inspection
Hybrid UAV
VTOL

Opis:

W artykule porównano różne typy bezzałogowych pojazdów latających przeznaczonych do zadań transportu oraz inspekcji. Rozpatrzono wielowirnikowce, samoloty, helikoptery oraz rozwiązania hybrydowe łączące cechy pozostałych typów. Każdy z typów pojazdów został scharakteryzowany przez maksymalny udźwig, zasięg, wyjątkowe cechy wyróżniające go na tle innych, złożoność konstrukcji oraz sposób sterowania. Porównanie to zostało wykonane na podstawie analizy literaturowej oraz własnego doświadczenia zdobytego podczas licznych zawodów związanych z zadaniami inspekcyjnymi, ratunkowymi i transportowymi. Zadania przygotowane na zawody wymagały pojazdów o pełnej lub częściowej autonomii. Pojazdy uwzględnione w analizie mieszczą się w skali od mikro- do taktycznych pojazdów bezzałogowych krótkiego zasięgu. Wyniki zebrano w tabeli, która podsumowuje zestaw cech każdego pojazdu, co umożliwia ocenę przydatności każdego z rozwiązań. Efektem jest koncepcja własna bezzałogowego pojazdu latającego, która łączy zalety innych konstrukcji starając się jednocześnie wyeliminować największe wady i dając szansę na zastosowanie w aplikacjach inspekcyjnych i transportowych.
The article shows the comparison of various types of unmanned aerial vehicles intended for transport and inspection tasks. We have considered multi-rotors, planes, helicopters and hybrid solutions combining features of other types. Each of the vehicles has been analyzed in terms of maximum load, range, exceptional features that distinguish them from others, the complexity of construction and control. The comparison was created based on literature analysis and our own experience from participation in multiple competition with inspection, emergency and transportation tasks. It is worth mentioning that competition task required full or partial autonomous mode. Vehicles which we are working on and which are compared in this paper can be classified between micro and tactical short range unmanned vehicles. Comparison was presented in form of table which present set of features for each type of vehicle, it makes it possible to evaluate their utility for considered tasks. Based on the analysis, our own concept of unmanned air vehicle was presented, it combines advantages of different constructions while trying to eliminate the greatest drawbacks; and we believe it is feasible to be applied in transport and inspection tasks.

Źródło:

Pomiary Automatyka Robotyka; 2018, 22, 3; 23-32
1427-9126

Pojawia się w:

Pomiary Automatyka Robotyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

UAV aircraft model for control system failures analysis

Autorzy:

Żugaj, M.
Bibik, P.
Jacewicz, M.

Powiązania:

https://bibliotekanauki.pl/articles/280867.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

UAV
flight dynamics
control
reconfiguration

Opis:

In the paper, influence of control surface failures on UAV aircraft dynamics is investigated. A method for control loads determination for a nonlinear UAV aircraft model is presented. The model has been developed to analyse the influence of various control surface failures on aircraft controllability and to form the background for developing reconfiguration methods of flight control systems. The analysis of the control system failure impact on the aircraft dynamics and the ability of the control system to reconfiguration are presented.

Źródło:

Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1405-1415
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Non-destructive evaluation of rescue and patrol unmanned aerial vehicle

Autorzy:

Pawluczy-Majka, J.

Powiązania:

https://bibliotekanauki.pl/articles/243854.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

UAV
NDT diagnostics
active thermography

Opis:

With the growing intensity of civil usage of the UAV, one of the most important problems is safety. It consists of operational safe use of the UAV in the common air area and reliability of the aerial vehicle construction. Each flying object is subjected to external loads, which influence on it in flight and on the ground. The external loads are mainly caused by aerodynamic, weight and inertia influence, ground reaction force and the power unit [1]. That is why during service, UAV structures are prone to many mechanical and environmental conditions that can damage to composite structures in the form of delamination, fiber breakage, and matrix cracking. Monitoring the level and type of damage to a composite structure is vital to determining the component’s structural integrity and preventing the failure of the structure during flight [2]. Non-destructive testing which has been used so far to identify defects in the aircraft structure made from metallic materials has a quite limited application in the case of composite structures. With the growing use of composites in the aviation industry, a necessity appears to work out a method allowing identification of technological defects and damages appeared in the process of the UAV’s operation. The answer to the appearing demand could be, for instance, the active thermography technique used for the thin wall test of the skin elements of the UAV. The obtained research results bring closer the problem of selection of the quick, well-fitted non-destructive testing method depending on the kind of the diagnosed construction.

Źródło:

Journal of KONES; 2014, 21, 4; 411-416
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

UAV – a useful tool for monitoring woodlands

Autorzy:

Zmarz, Anna

Powiązania:

https://bibliotekanauki.pl/articles/2037389.pdf

Data publikacji:

2014-06-25

Wydawca:

Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych

Tematy:

UAV
woodland monitoring
image data

Opis:

Unmanned aerial systems are in many countries one of the most dynamically developing branches of technology. They have also been recognized and are being utilized by scientists who find remote sensing indispensable in their work. Today, it is increasingly common to find research teams utilizing so-called drones in field research. Unmanned systems are becoming ever more important for environment monitoring by, on the one hand, providing data from inaccessible or remote areas, and, on the other hand, reducing the human costs required by traditional large field teams while also increasing the efficiency of the work. This paper presents the possibility of utilizing UAVs for image data collection in woodland areas. Flights over Głuchów and an Arboretum were performed using two different UAVs (Mentor, AVI). The flights were made in 2010 in the middle of the growing season. Images were taken with Sigma DP2 digital cameras in four spectral channels: R (red), G (green), B (blue) and IR (infrared). Images were saved in 8-bit. The Głuchów forest complex is located in the Głuchów forest district, which forms a part of the Rogów forest division. From the administrative viewpoint, the forest division is located in the Łódzkie province, Skierniewicki Poviat. The Arboretum is a park with a collection of trees and shrubs from different regions of the world. The area is characterized by a high variability of species and trees of varying heights. It is located in the Łódzkie province, Skierniewicki Poviat.

Źródło:

Miscellanea Geographica. Regional Studies on Development; 2014, 18, 2; 46-52
0867-6046
2084-6118

Pojawia się w:

Miscellanea Geographica. Regional Studies on Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Documentation of hiking trails and wooden areas using unmanned aerial vehicles (UAV) in Tatra National Park

Autorzy:

Ćwiąkała, P.
Kocierz, R.
Puniach, E.
Nędzka, M.
Mamcarz, K.
Niewiem, W.
Wiącek, P.

Powiązania:

https://bibliotekanauki.pl/articles/101618.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN

Tematy:

UAV
documentation
hiking trails
forest

Opis:

The research described in this article was conducted in the Tatra National Park in Poland, which is considered as one of the most-visited national parks in Europe. The exceptional popularity of this place is responsible for intensification of morphogenetic processes, resulting in the development of numerous forms of erosion. This article presents the outcomes of the research whose purpose was to verify the usability of unmanned aerial vehicles to check the condition of hiking trails and forests in alpine areas. An octocopter equipped with a non-metric camera was used for measurements. The paper sketches the methodology of data acquisition in harsh conditions and demanding locations of hiking trails on steep Tatra slopes. The paper also describes stages that lead to elaboration of basic photogrammetric products relying on SfM (Structure from Motion) technique. Finally, it shows the applicability of the prepared products to the evaluation of erosion along hiking trails, and to the study of plant succession or tree stand condition in the area located next to hiking trails.

Źródło:

Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/2; 1545-1561
1732-5587

Pojawia się w:

Infrastruktura i Ekologia Terenów Wiejskich

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Risk Assessment of Using a Contactless Method for Railway Surface Inspection as Alternative for Staff Inspection of Infrastructure

Autorzy:

Batko, Michał
Konieczny, Jarosław
Butor, Anna

Powiązania:

https://bibliotekanauki.pl/articles/27311593.pdf

Data publikacji:

2023

Wydawca:

Instytut Kolejnictwa

Tematy:

staff
inspection
infrastructure
monitoring
UAV

Opis:

Railway infrastructure managers are obliged to check technical condition of infrastructure in order to maintain safe traffic. Usually this is done using conventional methods and tools or directly through the inspections made by the technical staff . Technological development which is currently being experienced indicates the availability of new measurement methods that can be used to monitor the condition of railway infrastructure. However, the introduction of new methods for monitoring the infrastructure is usually a change affecting safety, which requires an assessment of the significance of the change for the maintenance of the required level of railway traffic safety. The authors assessed the significance of the change in the method of infrastructure monitoring and related risk assessment as a result of the use of the contactless method of checking the railway surface as an alternative method to staff inspections. Additional control measures or preventive measures for potential threats have also been indicated.

Źródło:

Problemy Kolejnictwa; 2023, 198; 98--95
0552-2145
2544-9451

Pojawia się w:

Problemy Kolejnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Przydatność dronów do kontroli stanu mostów
Helpfulness of unmanned aerial vehicles for bridge inspection

Autorzy:

Jarominiak, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/2057774.pdf

Data publikacji:

2021

Wydawca:

Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej

Tematy:

kontrola stanu mostów
drony inspekcyjne
charakterystyka techniczna drona inspekcyjnego
wyposażenie drona inspekcyjnego
ceny dronów
bridge inspection
inspection unmanned aerial vehicles
technical characteristics inspection UAV
inspection UAV equipment
UAV
prices UAV

Opis:

Artykuł zawiera opinie na temat przydatności dronów do kontroli stanu mostów, wnioski z kontroli mostów przeprowadzonych przez Departament Transportu Stanu Minnesota (USA), ogólną charakterystykę dronów inspekcyjnych i szczegółową drona ELIOS 2. Informacje o cenach i kierunkach rozwoju dronów inspekcyjnych.
The article presents opinions on the suitability of Unmanned Aerial Vehicles for bridge inspection, conclusions from the bridge inspection carried out by the DOT Minnesota (USA), general characteristics of inspection UAV and detailed characteristics UAV ELIOS 2, information on prices and directions of development of inspection UAV’s.

Źródło:

Drogownictwo; 2021, 6; 169--175
0012-6357

Pojawia się w:

Drogownictwo

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Investigation of mechanical properties of a rigid body in magnetic levitation state

Autorzy:

Ładyżyńska-Kozdraś, E.
Sibilska-Mroziewicz, A.
Falkowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/115612.pdf

Data publikacji:

2015

Wydawca:

Fundacja na Rzecz Młodych Naukowców

Tematy:

magnetic levitation
superconductors
Meissner effect
UAV catapult
lewitacja magnetyczna
nadprzewodniki
efekt Meissnera
katapulta UAV

Opis:

Levitation (from Latin levitas - lightness) is the process in which an object is suspended by a physical force against gravity, in a stable position without solid physical contact. The phenomenon of levitation, caused by magnetic forces is called magnetic levitation. The main advantage of magnetic levitation systems is the elimination of friction, which significantly influences reliability, capability, ecology and safety. The phenomenon of magnetic levitation can be used in Unmanned Aerial Vehicle (UAV) catapult. The article presents the results of experiments performed on the prototype magnetic catapult. Catapult has been designed for small, unmanned aircraft, weighing less than 2 kg. The results show the oscillations of levitating cart of magnetic catapult during simulated and actual take-off and landing procedures.

Źródło:

Challenges of Modern Technology; 2015, 6, 1; 23-27
2082-2863
2353-4419

Pojawia się w:

Challenges of Modern Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

MODELOWANIE HAŁDY KRUSZYWA NATURALNEGO Z WYKORZYSTANIEM TECHNOLOGII UAV WRAZ Z ANALIZĄ DOKŁADNOŚCI
Modeling of natural aggregate heap using UAV technology with accuracy analysis

Autorzy:

SMACZYŃSKI, MACIEJ

Powiązania:

https://bibliotekanauki.pl/articles/896365.pdf

Data publikacji:

2019

Wydawca:

Poznańskie Towarzystwo Przyjaciół Nauk

Tematy:

UAV
GNSS
surface modeling
geomatics

Opis:

The purpose of this article is to determine the potential of imaging obtained using an unmannedaerial platform (UAV) to create a digital model of terrain for aggregate heaps (DTMs). In addition, the intermediategoal is to carry out an independent accuracy check of the calculated 3D model, which in the study will be referred to an independent measurement using GNSS technology. The research object was a heap of natural aggregate with irregular shape and height differences up to 11 meters. Three point clouds with different detail parameters were generated from the acquired images. For further analysis, a point cloud with the best ratio of terrain reflection accuracy to the calculated RMSE value was selected. Independent control of 3D model accuracy was based on seven heap control points measured in the field and the same points generated on the 3D model . The deviations of several centimeters between field control points and points from the model may indicate the great potential of UAV technology and the possibility of its use in various engineering tasks.

Źródło:

Badania Fizjograficzne Seria A - Geografia Fizyczna; 2019, 10(70); 103-117
2081-6014

Pojawia się w:

Badania Fizjograficzne Seria A - Geografia Fizyczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Unmanned aerial vehicles – source of new threats in the civil aviation

Autorzy:

Krakowiak, Ewelina

Powiązania:

https://bibliotekanauki.pl/articles/534382.pdf

Data publikacji:

2017

Wydawca:

Wyższa Szkoła Biznesu w Dąbrowie Górniczej

Tematy:

UAV
Safety
Aviation
Operation
Events

Opis:

The presence of unmanned aerial vehicles in the airspace is affected by stimulating the development of aviation but also led to the creation of a new kind of threat. The variety of design and versatility of their applications made unmanned aerial vehicles widely available to all people. The number of flight incidents involving UAV was largely caused by failure to follow the rules of safe operation and the lack of experience of the operator. Due to the effects which may entail collision with an unmanned aircraft, aviation authorities and the users themselves take a series of measures aimed at their elimination.

Źródło:

Security Forum; 2017, 1, Volume 1 No. 1/2017; 55-62
2544-1809

Pojawia się w:

Security Forum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Real Time Implementation of Amphibious Unmanned Aerial Vehicle System for Horticulture

Autorzy:

Kumar, M. Arun
Sara, Dioline
Telagam, Nagarjuna
Raj, Balwinder

Powiązania:

https://bibliotekanauki.pl/articles/2202979.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

CATIA
UAV
automation
thrust
throttle

Opis:

Automating the tasks that require manpower has been considered as an area of active research in science and technology. Challenges in designing such systems include accuracy in the parameters of performance, minimal hardware, cost-efficiency, and security. The efficiency of drones designed for replacing humans is often evaluated using their weight, flying time, and power consumption. Herein, the prototypebased Drone model has been designed and discussed for horticulture applications. In this model, a horticulture drone has been designed for structuring and cutting of plants in street interstates. This methodology focuses on automation engineering that is utilized for cutting the plants in less time and less power, thereby diminishing the contamination that may happen by utilizing fuels. The epic part of this plan includes the less weight drone predesigned using Computer-Aided Three-Dimensional Interactive Application (CATIA) V5 Software. The throttle for the motors is adjusted at 50% to get the required thrust for the Unmanned Aerial Vehicle (UAV) to fly. Experimental results show that the horticulture drone has comparatively more flying time and less power consumption.

Źródło:

International Journal of Electronics and Telecommunications; 2023, 69, 1; 127--132
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Research Studio for Testing Control Algorithms of Mobile Robots

Autorzy:

Dudzik, Sebastian
Szelag, Piotr
Baran, Janusz

Powiązania:

https://bibliotekanauki.pl/articles/1844460.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

mobile robots
UAV
MATLAB Simulink
QDrone

Opis:

In recent years, a significant development of technologies related to the control and communication of mobile robots, including Unmanned Aerial Vehicles, has been noticeable. Developing these technologies requires having the necessary hardware and software to enable prototyping and simulation of control algorithms in laboratory conditions. The article presents the Laboratory of Intelligent Mobile Robots equipped with the latest solutions. The laboratory equipment consists of four quadcopter drones (QDrone) and two wheeled robots (QBot), equipped with rich sensor sets, a ground control station with Matlab-Simulink software, OptiTRACK object tracking system, and the necessary infrastructure for communication and security. The paper presents the results of measurements from sensors of robots monitoring various quantities during work. The measurements concerned, among others, the quantities of robots registered by IMU sensors of the tested robots (i.e., accelerometers, magnetometers, gyroscopes and others).

Źródło:

International Journal of Electronics and Telecommunications; 2020, 66, 4; 759-768
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Monitoring fotogrametryczny z wykorzystaniem bezzałogowego statku powietrznego na przykładzie osuwiska zlokalizowanego na zboczach poeksploatacyjnego zbiornika wodnego w KWB Adamów
Photogrammetric monitoring with the use of an unmanned aerial vehicle : case study of a landslide located on the slopes of a post-mining water reservoir in the KWB Adamów Mine

Autorzy:

Karwacki, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/20064891.pdf

Data publikacji:

2022

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

monitoring osuwisk
fotogrametria UAV
odkrywkowa kopalnia węgla brunatnego
landslide monitoring
UAV photogrammetry
opencast lignite mine

Opis:

The article presents the results of monitoring of landslides related to opencast mining. The landslides formed on the slopes of an artificial water reservoir in the Adamów open-cast lignite mine. The photogrammetric method was used for monitoring. The study of landslide activity was performed on the basis of six photogrammetric surveys made with the DJI Phantom 4 Advanced UAV. Changes in the landslide extent and vertical displacements were determined in five measurement periods. For four periods, differential digital terrain models were made and the volume of displaced earth masses was calculated. The future extent of the landslide was determined on the basis of cracks visible in high-resolution optical photos. The research has shown that UAVs equipped with an optical camera are very useful in monitoring the stability of slopes of post-mining water reservoirs. The applied method provided detailed data on the size of displacements without compromising on safety of people involved in field surveys.

Źródło:

Przegląd Geologiczny; 2022, 70, 9; 671-681
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

RIS-aided Multi-hop Backhauling for 5G/6G UAV-assisted Access Points

Autorzy:

Janji, Salim
Sroka, Paweł

Powiązania:

https://bibliotekanauki.pl/articles/24200733.pdf

Data publikacji:

2023

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

backhaul link
multi-hop
RIS
UAV

Opis:

Drones are considered to be an important part of future 6G telecommunication systems. Thanks to their quick deployment potential, they provide additional connectivity options in the form of a flying hotspot. However, in such use cases, they typically require a wireless backhaul link to facilitate their proper operation, which might be a challenging task in dense urban environments. One of the potential methods that may be relied upon to connect such nodes is the integrated access and backhaul (IAB) approach, where part of the spectrum allocated to users accessing the base station is used for wireless backhauling. Thus, in this work, we consider the problem of establishing a multi-hop wireless backhaul link following the IAB concept, with the aid of drone relay stations (DRSs) and reconfigurable intelligent surfaces (RISs). We formulate the problem of coverage improvement with a fixed number of relays, assuming certain throughput requirements for the backhaul link. The simulations show that the use of RISs offers a coverage improvement in such a scenario or a reduction in the number of nodes involved in ensuring the required backhaul performance.

Źródło:

Journal of Telecommunications and Information Technology; 2023, 2; 63--69
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

The concept of thermovision sensor supporting the navigation of unmanned aerial platforms

Autorzy:

Bieszczad, Grzegorz
Gogler, Sławomir
Krupiński, Michał
Ligienza, Andrzej
Sawicki, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/114264.pdf

Data publikacji:

2019

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

thermal-vision
UAV
navigatio
situational awareness

Opis:

The topic of this paper is a concept of a new type of a sensor intended for unmanned aerial vehicles (UAVs). Its operation is based on processing images acquired from a thermal camera operating in the long-wave infrared band (LWIR) placed underneath a vehicle’s chassis. The vehicle’s spatial displacement is determined by analyzing movement of characteristic thermal radiation points (ground, forest, buildings, etc.) in pictures acquired by the thermal camera. Magnitude and direction of displacement is obtained by processing stream of consecutive pictures with optical-flow based algorithm in real time. Radiation distribution analysis allows to calculate camera’s self-translation vector. Advantages of measuring translation based on thermal image analysis is lack of drift effect, resistance to magnetic field variations, low susceptibility to electromagnetic interference and change in weather conditions as compared to traditional inertial navigation sensors. As opposed to visible light situational awareness sensors, it offers operation in complete darkness (harsh weather nights and indoors).

Źródło:

Measurement Automation Monitoring; 2019, 65, 1; 15-18
2450-2855

Pojawia się w:

Measurement Automation Monitoring

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Managing the deployment of UAV systems in Slovakia
Zarządzanie wdrażaniem systemów UAV na Słowacji

Autorzy:

Holubčík, Martin
Koman, Gabriel
Sroka, Włodzimierz

Powiązania:

https://bibliotekanauki.pl/articles/27315172.pdf

Data publikacji:

2022

Wydawca:

Politechnika Częstochowska

Tematy:

UAV technology
business
process management
management decisionmaking
Slovakia
technologia UAV
biznes
zarządzanie procesowe
podejmowanie decyzji zarządczych
Słowacja

Opis:

This paper affirms the anticipated utilisation of UAV (Unmanned Aerial Vehicle) systems in the market environment existing in Slovakia. Significant use of UAV systems can be considered in light of corporate management’s own lack of readiness to employ them practically. The purpose of the article is to monitor the issue in Slovakia and identify the basic starting points that the company needs to solve in the case of process management of the implementation of UAV systems in internal company processes. The methodology of the issue took place through sociological inquiries in the form of questionnaires and document analyses. The result of the investigation is that the Slovak market does not offer relevant data on the active use of UAV systems in the field of ensuring the operation of internal company management processes. Based on the information obtained, it is clear that the need to introduce UAV systems will be crucial in the future, as well as the need to develop recommendations for the process management of the implementation of UAV systems in individual areas of industry in the conditions of Slovakia.
W artykule potwierdzono potencjalne wykorzystanie systemów UAV (Unmanned Aerial Vehicle - bezzałogowych statków powietrznych) w warunkach rynkowychistniejących na Słowacji. Stopień intensywności wykorzystania systemów UAV można rozpatrywać pod kątem braku gotowości kierownictwa przedsiębiorstw do ich praktycznego zastosowania. Celem artykułu jest monitorowanie niniejszej problematyki na Słowacji oraz identyfikacja podstawowych warunków, które przedsiębiorstwo musi spełniać w przypadku procesowego zarządzania implementacją systemów UAV wspierających wewnętrzne procesy firm. Metodologia badawcza obejmowała badania socjologiczne obejmujące kwestionariusze i analizy dokumentów. W wyniku przeprowadzonego badania stwierdzono, że rynek słowacki nie oferuje istotnych danych na temat aktywnego wykorzystania systemów UAV w zakresie zapewnienia funkcjonowania wewnętrznych procesów zarządzania przedsiębiorstwem. Na podstawie uzyskanych informacji można stwierdzić, że potrzeba wprowadzenia systemów UAV będzie w przyszłości kluczowa, jak również istnieje potrzeba opracowania zaleceń dotyczących zarządzania procesami wdrażania systemów UAV w poszczególnych sektorach przemysłu na Słowacji.

Źródło:

Polish Journal of Management Studies; 2022, 26, 2; 172--188
2081-7452

Pojawia się w:

Polish Journal of Management Studies

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

An analysis of phugoid oscillations of unmanned flying wing

Autorzy:

Mioduska, P.

Powiązania:

https://bibliotekanauki.pl/articles/242816.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

UAV
flying wing
longitudinal stability
phugoid oscillations

Opis:

The flying wing configuration has been considered by airplane designers for more than one hundred years. Tailless aircraft have been inspired by nature and its solutions. In present times, this configuration is used to design Unmanned Aerial Vehicle (UAV). This type of plane could serve personal, military and research purposes. The flying wing is characterized by large amount of payload space, smaller wetted area than conventional airplane and stealth capability. This makes, that it is widely applicable in rescue operations, geodetic and cartographic research, monitoring of natural resources, taking pictures or videos. Despite all the merits of tailless plane, it also has its downsides. The main problem of this type of aircraft is longitudinal stability. A conventional airplane can compensate the pitch moment of the wing with its horizontal tail but a flying wing is tailless. A slow decay of oscillations amplitude is the problem, which can be solved by active control or proper aerodynamic design. A combination of geometric characteristic such as sweep, taper, twist and location of vertical stabilizers along span, can lead to stable flying wing. In this article, the results of phugoid oscillations analysis of unmanned flying wing are presented. Research platform was X8-2, popular flying wing UAV, designed for First Person View (FPV) method to control the vehicle. The calculations were performed using 3D panel method. On the basis of calculations for three versions of the model aircraft, the dynamic characteristics were created. The analysis of longitudinal stability undertaken here has indicated propriety of applied changes in geometry.

Źródło:

Journal of KONES; 2016, 23, 2; 247-254
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Verification of the Geometrical Representation of Buildings in Cadastre Using UAV Photogrammetry

Autorzy:

Karabin, Marcin
Bakuła, Krzysztof
Łuczyński, Robert

Powiązania:

https://bibliotekanauki.pl/articles/1838029.pdf

Data publikacji:

2021

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

UAV
cadastre
buildings
outlines of buildings
photogrammetry

Opis:

The aim of this study was to determine the potential benefits of using UAV-based data to verify the accuracy of the geometry of the outlines of buildings registered in a cadastral database, and to investigate the potential use of data from UAV platforms in measuring the buildings. The authors examined whether the acquisition of data from UAVs can replace field measurements or only support them. The advantages and disadvantages of such data acquisition methods, compared with more well-established measurement methods, were identified.

Źródło:

Geomatics and Environmental Engineering; 2021, 15, 4; 81-99
1898-1135

Pojawia się w:

Geomatics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Unmanned Aerial Vehicles in the Security Service and as a New Tool in the Hands of Criminals

Autorzy:

Krakowiak, Ewelina

Powiązania:

https://bibliotekanauki.pl/articles/466204.pdf

Data publikacji:

2018-06-30

Wydawca:

Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.

Tematy:

UAV
security
smuggling
search and rescue
terrorism

Opis:

The aim of the article is to show areas in which unmanned aerial vehicles are used for protection purposes and to show that drones are increasingly used for criminal purposes, an important aspect is also to present the possibilities offered by these devices. Increasingly, new technologies are used daily in human activities. They become supportive, and at the same time, they facilitate many activities. With the introduction of unmanned aerial vehicles, they have become an object that has been adopted in many industries, from simple flight operations, to filming and shooting, to complex transport or search. Due to the many constraints inherent in the human factor, the necessity of introducing drones into many everyday industries has been recognized. Particular attention has been paid to unmanned aerial vehicles in the area of security and protection, where daily activities involve a high risk of human loss. For this purpose, new technologies are introduced, but drones, due to their characteristics and many other factors, a tool used by criminals for the purposes of trade, data theft, illegal shooting and photographing. These are just a few of the offences committed by means of unmanned aerial vehicles. This poses a threat and conducive to the emergence illegal market using drones.

Źródło:

Safety & Defense; 2018, 4(1), 1; 31-36
2450-551X

Pojawia się w:

Safety & Defense

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

The Elaboration of the Method of Fatigue Testing of the Rotor of the Mosups Plane Propulsion System

Autorzy:

Głowacki, D.
Rodzewicz, M.

Powiązania:

https://bibliotekanauki.pl/articles/97933.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

UAV
propulsion system
stress analysis
fatigue tests

Opis:

This paper concerns fatigue testing of the rotor of the propulsion system for the MOSUPS – an unmanned aircraft designed in a joint wing configuration, and equipped with a ducted propeller. The work presents the analysis of the stresses and deformations of the rotor structure as well as the form of the loading cycle. The aim of the paper is to introduce the concept of a simplified method of fatigue testing of multi-blade rotors. With the sophisticated geometry of the rotor in mind – the authors applied the FEM tools and implemented the ANSYS and nCode programs. The prototype of the fatigue stand built by the authors is also presented in the paper.

Źródło:

Fatigue of Aircraft Structures; 2016, 8; 97-103
2081-7738
2300-7591

Pojawia się w:

Fatigue of Aircraft Structures

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Onboard visual tracking for UAV’S

Autorzy:

Bănică, Marian Valentin
Rădoi, Anamaria
Pârvu, Petrișor Valentin

Powiązania:

https://bibliotekanauki.pl/articles/198201.pdf

Data publikacji:

2019

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

UAV
computer vision
tracking
wizja komputerowa
śledzenie

Opis:

Target tracking is one of the most common research themes in Computer vision. Ideally, a tracking algorithm will only once receive information about the target to be tracked and will be fast enough to identify the target in the remaining frames, including when its location changes substantially from one frame to another. In addition, if the target disappears from the area of interest, the algorithm should be able to re-identify the desired target. Target tracking was done using a drone with a Jetson TX2 computer onboard. The program runs at the drone level without the need for data processing on another device. Cameras were attached to the drones using a gimbal that maintains a fixed shooting angle. Target tracking was accomplished by placing it in the centre of the image with the drone constantly adjusting to keep the target properly framed. To start tracking, a human operator must fit the target he wishes to follow in a frame. The functionality of this system is excellent for remote monitoring of targets.

Źródło:

Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 105; 35-48
0209-3324
2450-1549

Pojawia się w:

Zeszyty Naukowe. Transport / Politechnika Śląska

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Research on resilience model of UAV swarm based on complex network dynamics

Autorzy:

Wei, Kunlun
Zhang, Tao
Chuanfu, Zhang

Powiązania:

https://bibliotekanauki.pl/articles/28328275.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

UAV swarm
resilience
SIS
system dynamics
topology

Opis:

Unmanned Aerial Vehicle (UAV) swarms are utilized in various missions and operated within an open environment that is prone to disruptions. The resilience of UAV swarms, an important requirement, mainly revolves around ensuring stable and uninterrupted operations. Malicious attacks can implement the adverse impacts of potential threats through swarm communication links. In this context, the SIS (Susceptible → Infected → Susceptible) method is suitable for describing the information transmission within UAV swarms. An enhanced resilience model of the UAV swarm is proposed in this study, which incorporates the factors of self-dynamics, dynamics of topology, dynamics of information transmission, and SIS into the complex network model. Self-dynamics refer to the internal dynamics of the drones. In this paper, dynamics of topology consist of three factors: the varying distance between drones, the incoming degrees of each drone, and the number of communication types between drones. Lastly, dynamics of information transmission are characterized by SIS. The model proposed in this paper has the capability to effectively capture changes in the network topology as well as the dynamics of the system, which are significant contributors to the loss of resilience. And then, the average number of susceptible drones is utilized as the metric to evaluate the resilience of the swarm. Furthermore, an experiment is conducted where a UAV swarm successfully carries out a surveillance mission to demonstrate the advantages of our proposed method. The proposed model not only enables the support of mission planning but also facilitates the design enhancements of UAV swarms.

Źródło:

Eksploatacja i Niezawodność; 2023, 25, 4; art. no. 173125
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Implementation of micro airborne radio relay

Autorzy:

Niewiadomski, K.
Kasprowicz, G.

Powiązania:

https://bibliotekanauki.pl/articles/384349.pdf

Data publikacji:

2017

Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów

Tematy:

UAV
telemetry
telecommand
mobile robot
radio relay

Opis:

This paper presents results of Micro Airborne Radio Relay implementation designed to extend range of mobile robots in search and rescue missions. Architecture of routing device with hardware based on ARM development board is presented, as well as overview of based on mbed-rtos software. Selected radio solution with radio modem and antennas is described. Paper presents results of proposed system field tests.

Źródło:

Journal of Automation Mobile Robotics and Intelligent Systems; 2017, 11, 1; 77-81
1897-8649
2080-2145

Pojawia się w:

Journal of Automation Mobile Robotics and Intelligent Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Problems of control of mini unmanned aerial vehicle (MINIUAV)

Autorzy:

Hajduk, J.
Homziuk, A.
Kuliński, M.
Sabak, R.

Powiązania:

https://bibliotekanauki.pl/articles/242360.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

UAV
technical object
engineering
miniature avionics system

Opis:

It was introduced suggestions and results concerning some of control miniUAV problems in this article. They were formulated on base of theoretical and experimental investigations. Now the own construction miniature system avionics is being investigated. This system is designed to stabilisation of miniUAV and to control of navigation with GPS signal. Now system is used also as flight control recorder. The avionics control system which lets for very good and saved navigation miniUAV should be created. more over this system should use GPS signal and miniature sensors. Especially, a block Junction diagram of a miniature avionics unit - miniBSP MSOP. = 3 accelerometers, 3 rate gyroscopes, static pressure sensor, dynamic pressure sensor, control path in the autopilot channel of pitch and roll during the Start and Steady Flight stage, Control path in the draught control channel during Start and Steady Flight stage, general scheme of a ground-based flight control to pilot miniBSP unmanned aircrafts, visualization of the ground-based flight control station operation, airframe for testing during flight, positions of equipment items in the miniBSP airframe are presented in the paper.

Źródło:

Journal of KONES; 2009, 16, 2; 167-173
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Investigations into Load Spectra of UAVS Aircraft

Autorzy:

Rodzewicz, M.
Głowacki, D.

Powiązania:

https://bibliotekanauki.pl/articles/97769.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

UAV loads
load spectrum
manual control
autopilot

Opis:

The paper contains a description of a novel approach to the load spectra estimation applied to UAVs. The authors have developed a number of tools in the LabVIEW environment enabling an in-depth analysis of flight-log data. One major achievement was the separation of the load spectra induced by steering and the load spectra induced by turbulence. The authors have shown a significant influence of both of the main load sources on the fatigue life of the UAV airframe, calculated based on the P-M hypothesis. This approach to fatigue testing of composite UAV airframes needs to take into account the rate of load variations as these may affect the fatigue life of tested structures. The paper presents several schemes of calculation algorithms and a number of well-illustrated examples of the tests and investigations results.

Źródło:

Fatigue of Aircraft Structures; 2013, 5; 40-52
2081-7738
2300-7591

Pojawia się w:

Fatigue of Aircraft Structures

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Airworthiness Tests of the UAV Structure − Fatigue Issues

Autorzy:

Rodzewicz, M.

Powiązania:

https://bibliotekanauki.pl/articles/97941.pdf

Data publikacji:

2012

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

UAV loads
load spectrum
manual control
autopilot

Opis:

The paper presents investigations undertaken in order to support developing the UAV airworthiness requirements, in particular those concerning fatigue aspects. Knowledge about UAVs load spectra is of vital importance for fatigue issues. The results of preliminary research are presented in this paper. A description of the load spectrum processing is given, starting from filtering the input-data, and then either counting the load signal transfers or implementing the Rainflow Counting algorithm and presenting the results in the form of a transfer array or halfcycles array. This description is illustrated by three examples of flight tests of 4-meter class UAVs, designed at Warsaw University of Technology. They concern flights controlled in a manual and automatic way in order to show differences between the LSs for such control modes. Besides the LS processing, a method for statistical analysis of load spectra from several flights is also presented to address the important problem of LS dispersion. Finally, there are shown selected tests of the UAV structure elements for which load spectra may have a crucial importance.

Źródło:

Fatigue of Aircraft Structures; 2012, 4; 82-93
2081-7738
2300-7591

Pojawia się w:

Fatigue of Aircraft Structures

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Use of 3D printing technology in the aviation industry on an example of numerical experimental stress state analysis of unmanned aerial vehicle wing

Autorzy:

Święch, Ł.
Bendarz, A.

Powiązania:

https://bibliotekanauki.pl/articles/246287.pdf

Data publikacji:

2017

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

DIC
3d printing
FFF
stress state
UAV

Opis:

The article presents the results of static tests performed on the primary support structures of a TWISST-ter unmanned aircraft constructed using additive manufacturing techniques commonly known as 3D printing. The primary goal of the experiment was determining the material effort of the structure in order to assess the feasibility of such an engineering solution in terms of material mechanics. Considering the fact that the properties of 3D printed elements are not widely known, both destructive experimental methods and finite element methods were used. During the experimental trails, the ARAMIS deformation measurement system, based on digital three-dimensional image correlation, was used. The results of this experiment allowed for the calibration of the numerical model as achieving convergence with experimentally determined strain fields. This approach ensured the correctness of the numerical determined stress state. Based on the results of the study, the necessary design improvements were implemented and a general conclusion was formed regarding of the numerical analysis of structures made through 3D printing.

Źródło:

Journal of KONES; 2017, 24, 4; 327-334
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Use of construction materials in unmanned aerial vehicles

Autorzy:

Adamski, M.

Powiązania:

https://bibliotekanauki.pl/articles/245052.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

Unmanned Aerial Vehicle
UAV
construction materials
material properties

Opis:

The design process is mostly connected with a proper selection of construction materials. Newly designed UAVs must undergo assessment in terms of performed tasks, range or fuel consumption. A significant influence upon the selection of materials, which are long lasting and resistant to damage, is exerted by the conditions of work of Unmanned Aerial Vehicles. They mainly execute their tasks at high altitudes with high speeds, where temperature and pressure differences may extensively damage not only the airframe skin, but also the equipment and the propulsion system itself. The aim of this study is to present the characteristics of materials currently used as well as their assessment in employed construction elements of UAVs. Polymer composites are superior to Al and Ti alloys, steel within the parameters of tensile strength and stiffness. As for the density gradient, polymer carbon fibre composites exceed glass fibre composites, also under cyclically variable loads. Glass fibre composites during tensile testing show higher values and a higher capability of absorbing energy under static and dynamic forces. Polymer matrix composites, reinforced with Kevlar, are less stiff than carbon-fibre composites, due to lower values of elasticity modulus, however they demonstrate higher impact load. Strength tests provide valuable data concerning the properties of a given material, such as tensile modulus E [MPa], tensile strength UTS [MPa], or resistance to high temperatures. It must be noted that these properties significantly affect the functioning of the airframe and its components.

Źródło:

Journal of KONES; 2016, 23, 3; 11-17
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

An adequate mathematical model of four-rotor flying robot in the context of control simulations

Autorzy:

Gardecki, S.
Giernacki, W.
Goslinski, J.
Kasinski, A.

Powiązania:

https://bibliotekanauki.pl/articles/950936.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów

Tematy:

unmanned aerial vehicle (UAV)
quadrocopter
modeling
mathematical model

Opis:

In this paper a model of the dynamics of four-rotor flying robot is described in details. Control design must be preceded by the modeling and subsequent analysis of the robot behavior in simulator. It is therefore necessary to develop the mathematical model as accurate as it is possible. The paper contains a detailed derivation of the mathematical model in the context of physics laws affecting the quadrocopter. The novelty of presented notation is an extention of Coriolis forces in linear acceleration and the gyroscopic effect on angular acceleration. In the validation phase, the mathematical model was verified with the use of proposed control algorithms. Simulation studies have demonstrated the adequacy of a MATLAB model to properly reflect the real quadrocopter dynamics. This would allow for its use in the simulator and afterwards to implement and verify of control laws on the real fourrotor flying robot.

Źródło:

Journal of Automation Mobile Robotics and Intelligent Systems; 2014, 8, 2; 9-16
1897-8649
2080-2145

Pojawia się w:

Journal of Automation Mobile Robotics and Intelligent Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Determination of the Position and Orientation of Aerial Photogrammetry Sensors: A Practical Implementation

Autorzy:

Busari, Q. A.

Powiązania:

https://bibliotekanauki.pl/articles/1156365.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Aerial
Exterior Orientation
Photogrammetry
Position
Space Resection
UAV

Opis:

Surveying engineering aims at determining the three-dimensional positions of points on the earth surface. One of the techniques of achieving this is by making measurements on two-dimensional aerial photographs. This is known as Aerial Photogrammetry. Aerial Photogrammetry employs the use of aircraft such as aeroplane, helicopter, or in recent times, drone, to take photographs of places to be mapped from the air. In determining the required ground coordinates of an object by Aerial Photogrammetry, the position and attitude (orientation) of the sensor (or camera) during exposure must be known. The recovery of these parameters (exterior orientation parameters) is known as space resection. Although several texts and papers have described various methods of retrieving the parameters, and how to go about the solutions, the descriptions are vivid, and usually unclear to a large percentage of students. The solution involves tedious computational tasks and is generally time-consuming and brain-tasking. Hence, there is need to proffer a step-by-step solution to a real-world problem that students can study. This paper aims to implement this by employing images captured by an Unmanned Aerial Vehicle (UAV) and measured ground coordinates at the University of Lagos, Nigeria. With a view to achieving quick, less stressful and gross error-free solutions, a computer program was developed in C# programming language for the problem using the principle of collinearity condition

Źródło:

World Scientific News; 2018, 94, 2; 131-148
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

FANET Drone’s 4K Data Applications, Mobility Models and Wi-Fi IEEE802.11n Standards

Autorzy:

QasMarrogy, Ghassan A.

Powiązania:

https://bibliotekanauki.pl/articles/1839466.pdf

Data publikacji:

2021

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

4K data transmission
FANET
mobility models
UAV

Opis:

With growing popularity of unmanned aerial vehicles (UAVs), the importance of flying ad-hoc networks (FANETs) is enhanced by such applications as 4K video recording, communications in search and rescue missions and goods deliveries, to name just a few. This, in turn, stimulates research on different topologies of networks existing between UAVs, with studies in this field being essential to improving performance of such networks. Several problems must be solved to effectively use UAVs in order to offer stable and reliable massive data transmission capabilities, taking into consideration quickly changing FANET topologies, types of routing, security issues, etc. In this paper, a comprehensive evaluation of FANETs used by UAVs is presented in terms of communication network challenges, data types, mobility models and standards applied in order to achieve best performance. The evaluation presented herein covers such areas as data throughput, retransmission attempts and delay.

Źródło:

Journal of Telecommunications and Information Technology; 2021, 1; 51-55
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Wpływ czynnika ludzkiego na bezpieczeństwo lotów bezzałogowych statków powietrznych

Autorzy:

Marzec, Dominika
Fellner, Radosław

Powiązania:

https://bibliotekanauki.pl/articles/2158507.pdf

Data publikacji:

2018

Wydawca:

Instytut Studiów Międzynarodowych i Edukacji Humanum

Tematy:

safety
unmanned aerial vehicles
UAV
human factor
aviation

Opis:

Using theories and models of human factor analysis in aviation, the problems of behavior and actions of unmanned aerial vehicles operators (UAVO) are presented, with particular emphasis on aspects of safety, situational awareness and communication. Besides to literature research, there were made the first in Poland interview surveys of operators and people involved with the industry, about human factor aspect, including threats to aviation safety related to UAV flights.

Źródło:

Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne; 2018, 2(29); 397-411
1898-0171

Pojawia się w:

Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

The use of an unmanned aerial vehicle to acquire data to develop inland electronic navigational charts: The case of a bridge and the navigation infrastructure located on it

Autorzy:

Łubczonek, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/2175549.pdf

Data publikacji:

2021

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

UAV
mapping
IENC
chart
navigation
bridge
shipping
inland

Opis:

Unmanned aerial vehicle (UAV) technologies are becoming increasingly common, with ever-expanding applications. Low-altitude imaging makes it possible to quickly acquire high-resolution data for various objects, especially for mapping. This paper presents the mapping of a bridge and its notice marks, lights, and span to produce electronic navigation charts for inland navigation. The research object was the Clowy Bridge on the Regalica River in Szczecin, Poland. In order to carry out the research, two photogrammetric flights were made, and three sets of photos were created, from which orthophotos were developed. The research included the analysis of the orthophoto generation process, as well as quantitative and qualitative analyses. The results of the research demonstrated the possibility of using this type of data for mapping bridges to create electronic navigation maps for inland navigation.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2021, 68 (140); 119--127
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

The use of UAV data for photogrammetric documentation
Wykorzystanie danych UAV w tworzeniu dokumentacji fotogrametrycznej

Autorzy:

Piech, Izabela
Borgiasz, Artur

Powiązania:

https://bibliotekanauki.pl/articles/2029245.pdf

Data publikacji:

2021

Wydawca:

Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie

Tematy:

UAV
photogrammetric documentation
orthophotomap
geomorfometria
dokumentacja fotogrametryczna
ortofotomapa

Opis:

Photogrammetry is a rapidly developing field of science, using new technologies such as unmanned aerial vehicles (UAVs) and digital cameras. Currently, unmanned aerial vehicles are not only used for amateur or professional commemorative aerial photos, but also have much more specialized applications. New technologies allow for faster development of numerous fields of science and provide better results with less work and resources. Unmanned aerial vehicles are used for photogrammetric raids, which produce photogrammetric images of terrain surface or buildings. This allows the generation of orthophotos, and even three-dimensional terrain models, enabling further analysis of a research area. The aim of the study was to make an orthophotomap of the cemetery in the Sułoszowa municipality on the basis of data obtained during a drone raid and to compare it with the existing orthophotomap. The goal was planned to be achieved through the following steps: importing images to Agisoft PhotoScan and georeferencing them to ensure metricity of subsequent studies, generating an orthophotomap and a cloud of points mapping the studied area, compilating and comparing the resulting numerical data, as well as graphic data.
Fotogrametria, to bardzo szybko rozwijająca się dziedzina nauki, wykorzystującą nowe technologie, takie jak bezzałogowe statki powierzchne (BSP) oraz kamery cyfrowe. Obecnie bezzałogowe statki powietrzne są wykorzystywane nie tylko na potrzeby amatorskiego lub profesjonalnego wykonywania pamiątkowych ujęć z powietrza, ale również znajdują dużo bardziej specjalistyczne zastosowania. Wykorzystanie nowych technologii pozwala na szybszy rozwój licznych dziedzin nauk oraz uzyskaniem lepszych efektów wykonywanych prac przy mniejszym nakładzie pracy i środków. Bezzałogowe statki powietrzne wykorzystuje się do wykonania nalotów fotogrametrycznych, dzięki których otrzymywane są zdjęcia fotogrametryczne powierzchni terenu lub samych budynków. Pozwala to na wygenerowanie ortofotomap, a nawet trójwymiarowych modeli terenu, umożliwiających dalszą analizę obszaru badań. Celem opracowania było wykonanie ortofotomapy cmentarza w gminie Sułoszowa na podstawie danych uzyskanych podczas nalotu dronem i porównanie jej z istniejącą ortofotomapą. Postawiony cel planowano osiągnąć poprzez realizację kolejnych etapów prac: import zdjęć do programu Agisoft PhotoScan oraz nadanie im georeferencji, w celu zapewnienia metryczności późniejszych opracowań, wygenerowanie ortofotomapy oraz chmury punktów odwzorowujących badany obszar, zestawienie i porównanie wynikowych danych liczbowych, zestawienie i porównanie wynikowych danych graficznych.

Źródło:

Geomatics, Landmanagement and Landscape; 2021, 2; 39-57
2300-1496

Pojawia się w:

Geomatics, Landmanagement and Landscape

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Techniques and critical technologies applied for small and mini uavs - state of the art and development perspectives
Technika i krytyczne technologie zastosowane w małych i miniaturowych UAV`S - stan obecny i perspektywy rozwoju

Autorzy:

Goraj, Z.
Szender, M.

Powiązania:

https://bibliotekanauki.pl/articles/213521.pdf

Data publikacji:

2005

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

technika w małych i miniaturowych UAV`S
technologie krytyczne w UAV`S
stan obecny
perspektywy rozwoju
techniques for small and mini UAV`S
critical technologies
state of art
development perspectives

Opis:

The technology and techniques applied in small and mini Unmanned Arial Vehicles derive from full scale UAV and flying model technology. Requirement for the technology applied is based on high reliability request linked with limited dimensions and take-off weight. Airframe structures, propulsion systems and take-off and landing techniques are described in this paper. Analysis of strength and weaknesses and development perspectives of these techniques are presented also. The paper describes briefly the control systems, flight data acquisition units and telemetry links.
Technika i technologia wykorzystywana w małych i miniaturowych UAVs pochodzi z pełno wymiarowych obiektów UAV i techniki modeli latających. Wymagania stosowanej technologii są oparte na żądaniach osiągnięcia wysokiej niezawodności połączonych z niedużymi wymiarami obiektu i jego małą masą startową. Artykuł opisuje konstrukcje płatowców, zespołów napędowych oraz techniki startu i lądowania. W artykule zawarta jest również analiza silnych i słabych punktów tych technik oraz perspektywy ich rozwoju. Artykuł opisuje pokrótce systemy sterowania, systemy zbierania danych lotnych oraz łącza telemetryczne.

Źródło:

Prace Instytutu Lotnictwa; 2005, 4 (183); 41-49
0509-6669
2300-5408

Pojawia się w:

Prace Instytutu Lotnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Pneumatyczna wyrzutnia startowa bezpilotowych samolotów
A pneumatic launcher for UAV

Autorzy:

Moldenhawer, A.
Perkowski, W.

Powiązania:

https://bibliotekanauki.pl/articles/213973.pdf

Data publikacji:

2011

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

bezpilotowy samolot (BS) rozpoznawczy
bezpilotowy aparat latający (BAL)
latający cel
wyrzutnia startowa BAL
wyrzutnia pneumatyczna BS
unmanned aircraft
unmanned aerial vehicle (UAV)
drone
flying target
UAV launcher
UAV pneumatic launcher

Opis:

W artykule przedstawiono skrótowo przebieg przeprowadzonych w ILot prac nad zaprojektowaniem, zbudowaniem i przetestowaniem pneumatycznej wyrzutni startowej WP1. Została ona opracowana na potrzeby rodziny samolotów bezpilotowych zaprojektowanych, zbudowanych i użytkowanych w ITWL.
The article presents briefly the course of work carried out in Institute of Aviation on the design, constructing and testing a pneumatic launcher WP1. It has been developed for unmanned aicraft family designed, built and operated at Air Force Institute of Technology.

Źródło:

Prace Instytutu Lotnictwa; 2011, 7 (216); 74-81
0509-6669
2300-5408

Pojawia się w:

Prace Instytutu Lotnictwa

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 38.

Tytuł:

Automation of Aircraft Fatigue Life Estimation

Autorzy:

Gajek, Stanisław

Powiązania:

https://bibliotekanauki.pl/articles/24201179.pdf

Data publikacji:

2022

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

Aircraft Fatigue
Rainflow Cycle Counting
Load Spectra
UAV

Opis:

The fatigue is an important factor in aircraft operation. A correct estimation of structure fatigue life is crucial for user and payload safety. However, due to high amount of data gathered during a typical recording of load spectra for different types of flights, the overall results become prone to human error. The paper describes development of a software able to perform an automated, in-depth analysis of data recorded with onboard accelerometers. Using the Rainflow Cycle Counting method, it transforms received data points into a Markov matrix. The prepared array is then recalculated into a half-cycle matrix, which can be collapsed into scalar value of fatigue level using the Palmgren-Miner rule. The method was tested with loads recorded during a typical flight conducted according to the Polish NSTS-06 flight scenario and simulated camera mounting fixed to a multirotor.

Źródło:

Fatigue of Aircraft Structures; 2022, 14; 83--103
2081-7738
2300-7591

Pojawia się w:

Fatigue of Aircraft Structures

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Investigating the applicability of unmanned aerial vehicles (uav) photogrammetry for the estimation of the volume of stockpiles

Autorzy:

Ajayi, Oluibukun Gbenga
Ajulo, John

Powiązania:

https://bibliotekanauki.pl/articles/1050771.pdf

Data publikacji:

2021-03-31

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

stockpiles
earthworks
volumetric computations
ground survey
UAV photogrammetry

Opis:

Accurately estimating the volume of earthworks is very important in mining engineering and construction. This estimation can be difficult because of the morphological condition of the stockpiles, hence, devising simpler, yet accurate methods of stockpile volume estimation is still a research problem in mining. Two non-invasive survey methods were compared in this research: the conventional ground-based and UAV-approach, for the survey of a twin-stockpile of gravel using Leica TS06 Total Station and DJI Mavic Air UAV, respectively. About 128 images of the area were acquired at 50 m flying height and 75% overlap during the flight mission. The images were processed using Agisoft Metashape Pro; a digital photogrammetric software, and the DEM obtained was used for the volume estimation. The total station data was also processed in ArcGIS to generate a TIN-model from which the volume was also estimated. The volume estimated from the TIN-model was compared with the volume estimated from the UAV-based DEM, using the volume obtained from the mill-machine as the standard. The obtained result shows that while 2750 m³ was obtained as the cumulative volume from the mill machine, the UAV approach yielded 2686.252 m³ and the ground survey approach gave 2830.713 m³. The percentage difference between the two methods compared to the actual volume is 2.94% and −2.31%, respectively. These results, and the result of the processing time analysis show that UAV approach is both accurate and time economical, which attests to the potentials of low-cost UAVs to provide robust alternative to the time-consuming and rigorous ground survey approach.

Źródło:

Quaestiones Geographicae; 2021, 40, 1; 25-38
0137-477X
2081-6383

Pojawia się w:

Quaestiones Geographicae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

FANET Drone’s 4K Data Applications, Mobility Models and Wi-Fi IEEE802.11n Standards

Autorzy:

QasMarrogy, Ghassan A.

Powiązania:

https://bibliotekanauki.pl/articles/1839485.pdf

Data publikacji:

2021

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

4K data transmission
FANET
mobility models
UAV

Opis:

With growing popularity of unmanned aerial vehicles (UAVs), the importance of flying ad-hoc networks (FANETs) is enhanced by such applications as 4K video recording, communications in search and rescue missions and goods deliveries, to name just a few. This, in turn, stimulates research on different topologies of networks existing between UAVs, with studies in this field being essential to improving performance of such networks. Several problems must be solved to effectively use UAVs in order to offer stable and reliable massive data transmission capabilities, taking into consideration quickly changing FANET topologies, types of routing, security issues, etc. In this paper, a comprehensive evaluation of FANETs used by UAVs is presented in terms of communication network challenges, data types, mobility models and standards applied in order to achieve best performance. The evaluation presented herein covers such areas as data throughput, retransmission attempts and delay.

Źródło:

Journal of Telecommunications and Information Technology; 2021, 1; 51-55
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Assessment of the accuracy of positioning unmanned aerial vehicles

Autorzy:

Ćwiąkała, P.
Puniach, E.

Powiązania:

https://bibliotekanauki.pl/articles/114170.pdf

Data publikacji:

2016

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

UAV
hexa-rotor aircraft
position stabilization
position accuracy

Opis:

The paper discusses results of tests designed to determine the position stabilization accuracy of an Unmanned Aircraft System. The tests were carried out on a DJI S900 device featuring a A2 flight controller during basic flight operations. All the maneuvers were performed in the remote control mode with RC system, while the UAV's position was stabilized by its onboard systems. During all the tests, state-of-the-art surveying equipment was used to determine the position of the UAV. An analysis of the obtained measurement data has enabled the verification of the UAV positioning accuracy parameters specified by the manufacturer of the UAV. It has also allowed the assessment of onboard system indications in terms of their reliability in missions involving documentation photography, video shooting or professional photogrammetric documentation. The proposed set of tests, including the testing methodology, can successfully be applied in the future to inspect the operation of this type of equipment.

Źródło:

Measurement Automation Monitoring; 2016, 62, 1; 17-21
2450-2855

Pojawia się w:

Measurement Automation Monitoring

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Concept of tiltrotor UAV control system

Autorzy:

Ciopcia, M.
Szczepański, C.

Powiązania:

https://bibliotekanauki.pl/articles/247022.pdf

Data publikacji:

2017

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

UAV
tiltrotor
control system
rotor przechyłu
system sterowania

Opis:

Nowadays, civil UAV industry market grows rapidly. This expansion is followed by the new requirements and expectations against UAVs, which force their constructors to look for less typical solutions. Expected long time endurance and range are the typical examples of such expectations. Clients are often looking for UAV with VTOL ability and time of flight much greater than 30 minutes and long range. They want to inspect large areas, i.e. between major cities without need of paying for building and maintaining developed aircraft infrastructure. Example of UAV with low infrastructure requirements are multirotors. Major disadvantage of them is short flight time. Elongating time of flight is hard to achieve by classical multirotor with standard Li-Pol batteries available on the market. They have too low energy density in currently used technology. Alternative power solutions, like fuel cells, have low financially rewarding factor, which cause whole projects to be unprofitable. Foregoing circumstances force engineers to find less usual ways for improvement energy efficiency, which will cause extending the time and range of flight. One of them is a tiltrotor. Tiltrotors are hybrid solutions – they combine airplane and multirotor capabilities to achieve features, which exclude each other in classical constructions. Aircraft-like wing make it able to use its lift-to-drag ratio to achieve energy savings, higher top speed and extended range in comparison with multirotors. UAV is also equipped with multiple multirotor-style engines with additional capability to rotate itself in pitch. In horizontal engine position, vehicle behaves like classical multirotor – allowing pilot to hover and perform VTOL manoeuvres. When engines are tilted to vertical position, whole UAV get performance similar to airplane – high speed and flight endurance. In the other hand, practical implementation of tiltrotor solution can be problematic: simulation, steering and controlling such aircraft in transition state are complex tasks. Moreover, designed aircraft should follow major rule connected with multirotors: Should have as simple, robust mechanical design as it can. Proposed article will concentrate on concept and preliminary design of fly-by-wire steering system with unique properties for tiltrotor. One of such properties will be unification of steering method – which eliminates need for switch and setting initial conditions for control subsystems, when flight procedure requires changing flight mode. Second important improvement will be possibility to use transitional states as intermediate state between propeller driven fly and gliding – which allow achieving wide spectrum of flight speeds. Moreover, huge number degrees of freedom (at least 9) create new opportunities for steering optimization. Extensive thrust vectoring abilities of such UAV could not only implicate substantial efficiency improvement of multirotors, but also improve its manoeuvrability. The article will focus on basic concepts of kinematics, steering of such UAV and show proposition of energyusage oriented optimization for its control trajectories. To let mechanical design be simple, all control and steering methods will be implemented in software, which will implicate complex structure of steering system. Overcoming complexity of software should be profitable in relation to expected improvements of UAV capabilities.

Źródło:

Journal of KONES; 2017, 24, 1; 83-89
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Optimisation of aircraft position in the formation flight for the drag reduction

Autorzy:

Antczak, A.
Sibilski, K.

Powiązania:

https://bibliotekanauki.pl/articles/245259.pdf

Data publikacji:

2018

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

UAV
formation flying
optimisation
dynamic of flight
aerodynamic

Opis:

This article presents optimisation of necessary flight thrust in a V-shaped flight formation of small-unmanned plane “Sikorka”. At the beginning is showed analyse of birds behaviour. Their formation flying was the cause of attention in order to minimalize fuel consumption. Afterwards there are overlooked scientific articles about the formation flying subject contain pure physic analyses, and articles about researches which was made in order to explain economic beneficial for airlines. Thus, the article presents mathematical model, which was optimised for three different starting position of a longitudinal axis. After optimisation there are presented results of the wingman position in regard of the leader. Influence of the calculation results on the formation flying was analysed, allowing for some conclusions about the future of the UAV’s flights. The given process is aimed to achieve the best (optimal) solution from the point of view of the specific criterion. The following most important terms can be distinguished within the optimization process: decisive variables – parameters determining the basic project assumptions. The basic design variables and design constrains are described.

Źródło:

Journal of KONES; 2018, 25, 3; 39-50
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

The era of the unmanned vevicles is coming

Autorzy:

Krawczyk, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/2086235.pdf

Data publikacji:

2021

Wydawca:

Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego

Tematy:

new technologies
UAV
automation
unmanned vehicles
transport processes

Opis:

Objectives: The use of Unmanned Vehicles in air, land and water transport is constantly increasing due to their technical and operational capabilities, along with economic advantages. They are used for recreational and commercial purposes by individuals, companies, organisations and state institutions. Particular types of vehicles are at different stages of technical, legislative and implementation advancement. Unmanned vehicles are at different phases of the process of the launch on the market for common use by the public. Railway transport will be the first to undergo widespread and, consequently, full automation, due to the fact that it is already in use and there is a possibility of its safe implementation, which must progress along with the development of technology, science and experience of producers and users. Methods: Scientific methods used in the paper are: analysis and criticism of written sources, analysis and logical construction. Results: The article presents issues concerning the possibility of implementing the use of unmanned vehicles in the air, land and water transport system. The state of advancement of the legislative and technical work has been described, along with the difficulties that can be encountered before the complete implementation of unmanned vehicles into operation. Conclusions: The process of implementing unmanned vehicles into the transport system has begun and it is irreversible. It is a matter of time before unmanned systems are used to transport people and goods. Their use is safer, more economically beneficial and brings benefits to society.

Źródło:

Przegląd Nauk o Obronności; 2021, 6, 11; 27--42
2450-6869

Pojawia się w:

Przegląd Nauk o Obronności

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Analysis of algorithms for automatic classification of photogrammetric point clouds to build a digital terrain model in a shoreline area

Autorzy:

Łącka, Małgorzata

Powiązania:

https://bibliotekanauki.pl/articles/2175550.pdf

Data publikacji:

2021

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

point cloud
filtration
DTM
UAV
bare earth
ground

Opis:

Unmanned aerial vehicles (UAVs) allow relatively cheap and fast acquisition of high-resolution data for small areas, making it possible to produce not only an orthophoto, understood as a two-dimensional product, but also a three-dimensional point cloud, which is the basis for obtaining a digital terrain model (DTM). The use of high-resolution image and elevation data may allow accurate shoreline delineation in areas where such measurement is not possible with other methods and further use of these data, e.g. for the production of electronic navigation charts. The accuracy of the final product, the DTM, is significantly affected by the photogrammetric classification process of the point cloud and the correct separation of the ground class. The aim of this study was to assess the effectiveness of the algorithms used to classify ground in photogrammetric point clouds and obtain correct DTMs. Three algorithms were tested: Adaptive Triangulated Irregular Network, Progressive Triangulated Irregular Network, and Multiscale Curvature Classification. The study involved two test areas covering natural shorelines. Images acquired with a UAV on the X8 system and a Sony alpha camera with a mounted 15 mm wide-angle lens were used as data for the research experiment. Accuracy analysis of the developed models was performed using check points acquired by the GNSS-RTK method.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2021, 68 (140); 108--118
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Optimising UAV Data Acquisition and Processing for Photogrammetry: A Review

Autorzy:

Pargieła, Karolina

Powiązania:

https://bibliotekanauki.pl/articles/2203962.pdf

Data publikacji:

2023

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

photogrammetry
UAV
optimising
bundle adjustment
structure from motion

Opis:

Unmanned aerial vehicles (UAVs) are used to acquire measurement data for an increasing number of applications. Photogrammetric studies based on UAV data, thanks to the significant development of computer vision techniques, photogrammetry, and equipment miniaturization, allow sufficient accuracy for many engineering and non-engineering applications to be achieved. In addition to accuracy, development time and cost of data acquisition and processing are also important issues. The aim of this paper is to present potential limitations in the use of UAVs to acquire measurement data and to present measurement and processing techniques affecting the optimisation of work both in terms of accuracy and economy. Issues related to the type of drones used (multi-rotor, fixed-wing), type of shutter in the camera (rolling shutter, global shutter ), camera calibration method (pre-calibration, self-calibration), georeferencing method (direct, indirect), technique of measuring the external images orientation parameters (RTK, PPK, PPP), flight design methods and the type of software used were analysed.

Źródło:

Geomatics and Environmental Engineering; 2023, 17, 3; 29--59
1898-1135

Pojawia się w:

Geomatics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

3D LoD3 Modeling of High Building Using Terrestrial Laser Scanning and Unmanned Aerial Vehicle: A Case Study in Halong City, Vietnam

Autorzy:

Le, Thi Thu Ha
Nguyen, Quoc Long

Powiązania:

https://bibliotekanauki.pl/articles/27323222.pdf

Data publikacji:

2023

Wydawca:

Polskie Towarzystwo Przeróbki Kopalin

Tematy:

3D LoD3 model of high building
Unmanned Aerial Vehicle (UAV)
Terrestrial Laser Scanners (TLS)
UAV
skaning laserowy
Wietnam

Opis:

3D urban building models play an important role in the association, convergence and integration of economic and social urban data. 3D building reconstruction can be done from both the lidar and image-based point clouds, however, the lidar point clouds has dominated the research giving the 3D buildings reconstruction from aerial images point clouds less attention. The UAV images can be acquired at low cost, the workflow can be automated with minimal technical knowhow limitation. This promotes the necessity to understand and question to what extent the 3D buildings from UAV point clouds are complete and correct from data processing to parameter settings. This study focuses on proposing a process for building 3D geospatial data for a smart city using geospatial data collected by UAV and Terrestrial Laser Scanner. The experimental results have produced 3D geospatial data of high building in LoD3, with the root mean square error of the received test points mΔx=3.8 cm, mΔy=3.1 cm, and mΔH=7.5 cm.

Źródło:

Inżynieria Mineralna; 2023, 2; 303--310
1640-4920

Pojawia się w:

Inżynieria Mineralna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Optimal choice of the number of ground control points for developing precise DSM using light-weight UAV in small and medium-sized open-pit mine

Autorzy:

Long, Nguyen Quoc
Goyal, Ropesh
Bui, Luyen K.
Cuong, Cao Xuan
Canh, Le Van
Minh, Nguyen Quang
Bui, Xuan‑Nam

Powiązania:

https://bibliotekanauki.pl/articles/2073863.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

statek powietrzny
kopalnia odkrywkowa
technologia UAV
lightweight UAV
digital surface model
ground control points
small and medium-sized open-pit mine

Opis:

UAV technology is being applied for DSM generation in open-pit mines with a well-established fact that the precision of such DSM is improved by increasing the number of Ground Control Points (GCPs). However, DSMs are updated frequently in an open-pit mine where the surface is excavated continuously. This imposes a challenge to arrange and maintain the GCPs in the field. Therefore, an optimal number of GCPs should be determined to obtain sufficiently accurate DSMs while maintaining safety, time, and cost-effectiveness in the project. This study investigates the influence of the numbers of GCPs and their network configuration in the Long Son quarry, Vietnam. The analysis involved DSMs generated from eight cases with a total of 18 GCPs and each having five network configurations. The inter-case and intra-case accuracy of DSMs is assessed based on RMSEXY, RMSEZ, and RMSEXYZ. The results show that for a small- or medium-sized open-pit mine having an area of approximately 36 hectares, five GCPs are sufficient to achieve an overall accuracy of less than 10 cm. It is further shown that the optimal choice of the number of GCPs for DSM generation in such a mining site is seven due to a significant improvement in accuracy (<3.5 cm) and a decrease in configuration dependency compared to the five GCPs.

Źródło:

Archives of Mining Sciences; 2021, 66, 3; 369--384
0860-7001

Pojawia się w:

Archives of Mining Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Experimental Research of Tandem-Scheme UAV Model Aerodynamic Characteristics

Autorzy:

Masko, O. M.
Kryvokhatko, I. S.
Sukhov, V. V.

Powiązania:

https://bibliotekanauki.pl/articles/213671.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

UAV
tandem-scheme
aerodynamic characteristics
wingspan
stagger
dihedral angles

Opis:

Tandem-wing aerodynamic scheme became widespread for tube launch UAV due to possibility of required flight performance realization under tight dimension constraints. In this work results of wind tunnel weight and visual tests of UAV model with wingspans about 1 m are presented. Model aerodynamic characteristics were defined by six-component wind tunnel balance at Mach number 0.075 and Reynolds number 187 000 calculated for one wing chord of 0.11 m. Model stagger (390, 490, 590 mm), rear wing dihedral angle (0°, -5°, -9°), forward-to-rear wingspan ratio (0.67; 0.9; 0.92; 1.24) were variable. It was determined that model is longitudinal and directional static stable, has high maximal lift-drag ratio (in range from 10.6 to 13.7) and acceptable maximal lift coefficient without flaps (from 1.05 to 1.09) and critical angle of attack (from 15.1 to 16.4°). Stagger increasing leads to zero or positive maximal lift-drag ratio increasing. If forward wing span is larger than rear wing span than stagger increasing is more effective with zero dihedral angle. If rear wing span is larger than forward wing span than stagger increasing is more effective with negative dihedral angle.

Źródło:

Prace Instytutu Lotnictwa; 2014, 4 (237) December 2014; 63-75
0509-6669
2300-5408

Pojawia się w:

Prace Instytutu Lotnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Ocena deformacji budynku spowodowanych podziemną eksploatacją górniczą z wykorzystaniem technologii UAV
Estimating of building deformation caused by mining exploitation using UAV technology

Autorzy:

Sikora, Paweł
Apanowicz, Bartosz
Hein, Sebastian

Powiązania:

https://bibliotekanauki.pl/articles/166980.pdf

Data publikacji:

2020

Wydawca:

Stowarzyszenie Inżynierów i Techników Górnictwa

Tematy:

szkody górnicze
UAV
wysokie budynki
mining damage
high buildings

Opis:

W artykule dokonano oceny uszkodzeń zewnętrznej elewacji budynku, spowodowanych podziemną eksploatacją górniczą z wykorzystaniem technologii UAV (ang. Unmanned Aerial Vehicle). Jako obiekt badań wybrano Kościół pod wezwaniem Św. Krzyża, zlokalizowany przy ulicy Frenzla w Bytomiu. W rejonie Kościoła prowadzona była wieloletnia eksploatacja węgla kamiennego. W celu oceny aktualnego stanu zewnętrznej elewacji przeprowadzono nalot bezzałogowym statkiem powietrznym. Wykonano serię zdjęć frontu budynku. Do opracowania metrycznej fotomapy elewacji wykorzystano oprogramowanie CAD (ang. Computer Aided Design) z nakładką Geolisp. Procedura umożliwiła inwentaryzację i kategoryzację uszkodzeń.
The article performer evaluation of damage to the building’s external façade caused by mining exploitation using UAV (Unmanned Aerial Vehicle) technology. The church which is located at Frenzla Street in Bytom was chosen for the study. In the area of the church was carried out coal mining for many years. To assess the current condition of the external facade was using a unmanned aerial vehicle. A series of photos of the front of the building were taken. CAD (Computer Aided Design) software with Geolisp overlay was used to develop a metric photomap. The procedure allowed inventories and categorization of damage.

Źródło:

Przegląd Górniczy; 2020, 76, 2; 51-56
0033-216X

Pojawia się w:

Przegląd Górniczy

Dostawca treści:

Biblioteka Nauki

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