Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "multisensor" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-19 z 19
    Tytuł:
    Open for the future. More customization for ZEISS O-INSPECT
    Autorzy:
    Fischer, M.
    Balle, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/132116.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    multisensor measuring machine
    metrology
    Opis:
    The new ZEISS O-INSPECT family provides even more flexibility than before: users can now choose between several machine sizes and configurations of the multisensor measuring machine and various options. For example, they can integrate or retrofit a chromatic focus sensor as needed. In addition to numerous customization options, the new product family also features considerably higher dynamics.
    Źródło:
    Advanced Technologies in Mechanics; 2015, 2, no. 2 (3); 37-40
    2392-0327
    Pojawia się w:
    Advanced Technologies in Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    State estimation in a decentralized discrete time LQG control for a multisensor system
    Autorzy:
    Duda, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/964034.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multisensor system
    LQG problem
    Kalman filter
    Opis:
    In the paper a state filtration in a decentralized discrete time Linear Quadratic Gaussian problem formulated for a multisensor system is considered. Local optimal control laws depend on global state estimates and are calculated by each node. In a classical centralized information pattern the global state estimators use measurements data from all nodes. In a decentralized system the global state estimates are computed at each node using local state estimates based on local measurements and values of previous controls, from other nodes. In the paper, contrary to this, the controls are not transmitted between nodes. It leads to nonconventional filtration because the controls from other nodes are treated as random variables for each node. The cost for the additional reduced transmission is an increased filter computation at each node.
    Źródło:
    Archives of Control Sciences; 2017, 27, 1; 29-39
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusion filtration in LQG control for multisensor systems
    Autorzy:
    Duda, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/206075.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    multisensor system
    Kalman filter
    LQG problem
    fusion filtration
    Opis:
    In the paper, state filtration in a LQG problem formulated for a multisensor system is considered. Control is determined by a central node as a linear form of a state estimate. It is assumed that control values are not available to local nodes. Because of the drawbacks of centralized filtration an optimal fusion of decentralized local Kalman filters is proposed. When control values are not available to local nodes, then control should be treated as a random variable in the synthesis of local state estimates. This leads to a non-classical estimation. It is shown that the proposed filter is equivalent to the centralized one.
    Źródło:
    Control and Cybernetics; 2013, 42, 4; 743-754
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    AIOSAT - Autonomous Indoor & Outdoor Safety Tracking System
    Autorzy:
    Adin, Iñigo
    Zabalegui, Paul
    Perez, Alejandro
    Arrizabalaga, Jaione
    Goya, Jon
    Mendizabal, Jaizki
    Powiązania:
    https://bibliotekanauki.pl/articles/320458.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    GNSS
    Galileo
    EDAS
    tracking
    firefighting
    multisensor
    fusion
    communication optimization
    Opis:
    Even though satellite-based positioning increases rescue workers’ safety and efficiency, signal availability, reliability, and accuracy are often poor during fire operations, due to terrain formation, natural and structural obstacles or even the conditions of the operation. In central Europe, the stakeholders report a strong necessity to complement the location for mixed indoor-outdoor and GNSS blocked scenarios. As such, location information often needs to be augmented. For that, European Global Navigation Satellite System Galileo could help by improving the availability of the satellites with different features. Moreover, a multi-sensored collaborative system could also take advantage of the rescue personnel who are already involved in firefighting and complement the input data for positioning. The Autonomous Indoor & Outdoor Safety Tracking System (AIOSAT) is a multinational project founded through the Horizon 2020 program, with seven partners from Spain, Netherlands and Belgium. It is reaching the first year of progress (out of 3) and the overarching objective of AIOSAT system is to advance beyond the state of the art in tracking rescue workers by creating a high availability and high integrity team positioning and tracking system. On the system level approach, this goal is achieved by fusing the GNSS, EDAS/EGNOS, pedestrian dead reckoning and ultra-wide band ranging information, possibly augmented with map data. The system should be able to work both inside buildings and rural areas, which are the test cases defined by the final users involved in the consortium and the advisory board panel of the project.
    Źródło:
    Annual of Navigation; 2019, 26; 21-32
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EDAS (Egnos Data Access Service) differential GNSS corrections: a reliable free-of-charge alternative for precision farming in Europe
    Autorzy:
    Vázquez, J.
    Lacarra, E.
    Morán, J.
    Sánchez, M. A.
    González, A.
    Bruzual, J.
    Rioja, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/320569.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    GNSS
    Galileo
    EDAS
    tracking
    firefighting
    multisensor
    fusion
    communication optimization
    Opis:
    EDAS (EGNOS Data Access Service) is the EGNOS internet broadcast service, which provides free of charge access to the data collected and generated by the EGNOS infrastructure. EDAS disseminates over the Internet, both in real time and via an FTP archive, the raw data of the GPS, GLONASS (no commitment on GLONASS data is provided (1)) and EGNOS GEO satellites collected by the receivers located at the EGNOS reference stations, which are mainly distributed over Europe and North Africa. The EDAS services offer several types of GNSS data in various protocols and formats, such as DGNSS corrections. This paper reports on the results of some in-field tests conducted by ESSP and Topcon Agriculture to confirm the suitability of EDAS DGNSS corrections for precision farming in Europe. The European Commission (EC) is the owner of EGNOS system (including EDAS) and has delegated the exploitation of EGNOS to the European GNSS Agency (GSA). EDAS service provision is performed by ESSP, as EGNOS Services Provider, under contract with the GSA, the EGNOS program manager. In the ENC 2018 article “EDAS (EGNOS Data Access Service): Differential GPS corrections performance test with state-of-the-art precision agriculture system”, ESSP and Topcon Agriculture presented the results of the first in-field test conducted in a dynamic and real-life environment in the summer of 2017. The test results indicated that the EDAS DGNSS corrections could enable a reliable pass-to-pass accuracy performance for a wide range of precision agriculture applications and become an attractive solution for cereal farms, when the farm is located in the vicinity of an EGNOS reference station. In particular, Topcon Agriculture acknowledged that the observed performance was sufficient to support the following precision agriculture applications: spraying and spreading of any crop type, tilling and harvesting of cereal. Then, ESSP and Topcon Agriculture engaged in additional testing activities to further characterise the EDAS DGPS performance in different scenarios (i.e. at various European locations and with a variety of distances between the designated farm and the target EGNOS reference station). In each test, multiple runs with the rover tractors have been performed over the reference patterns predefined in the Topcon guidance systems. Data recorded during the tests has been analysed in detail, looking at the key performance indicators (e.g. cross track error and pass-to-pass performance) that characterize the EDAS DGPS performance for precision agriculture applications. Different techniques for the computation of the pass-to-pass accuracy performance have been used, including a procedure to measure live in the field and a post-processing alternative. The diversity of scenarios available allows drawing conclusions on the applicability of EDAS DGPS corrections (in terms of maximum distance from the target EGNOS station) for precision agriculture and also understanding the impact of operationally relevant aspects such as the quality of the mobile internet coverage (highly variable across Europe). The EDAS system and its architecture, the main types of data disseminated through EDAS services and the online information available to the EDAS users are introduced in this paper. In particular, the EDAS Ntrip service is described in detail, since it provides the differential corrections to the GPS and GLONASS satellites at the EGNOS reference stations in RTCM format, which are the basis for the present study. The article also reports on the results of the latest tests, which have been performed using Topcon receivers, vehicles and auto-steering systems. In all cases, two different Topcon guidance systems on board tractors were running simultaneously to assess the EDAS DGPS positioning performance with respect to a the reference provided by a top-performing RTK-based Topcon solution. The objective of this paper is to draw conclusions on the use of EDAS DGPS corrections as a reliable free-of-charge alternative for precision farming in Europe (especially for cereal farms), based on the available performance results from the testing campaign and the feedback from the involved precision agriculture experts.
    Źródło:
    Annual of Navigation; 2019, 26; 46-58
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusion Kalman filtration for distributed multisensor systems
    Autorzy:
    Duda, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/229236.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fusion Kalman filtration
    multisensor system
    one step delay information
    Opis:
    In the paper, fusion state hierarchical filtration for a multisensor system is considered. An optimal global Kalman filter is realized by a central node in the information form. The state estimate depends on local information that should be sent by local nodes. Two information structures are considered in the paper. In the first case local estimates are based on the local measurement information. It leads to distributed Kalman filter fusion that is well known in a literature. In the second case local node has additionally global information of the system with one step delay. A synthesis of local filters is presented. An advantage of this structure is discussed.
    Źródło:
    Archives of Control Sciences; 2014, 24, 1; 53-65
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluating the performance of mems based inertial navigation sensors for land mobile applications
    Autorzy:
    Kealy, A.
    Retsche, G.
    Grejner-Brzezińska, D.
    Gikas, V.
    Roberts, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/130642.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    fusion
    acquisition
    multisensor
    integration
    navigation
    fuzja
    przejęcie
    integracja
    nawigacja
    Opis:
    In 2010 a collaborative working group was formed under the professional associations: International Association of Geodesy (IAG WG4.2.5) and International Federation of Surveys (FIG WG5.5). Entitled ubiquitous positioning, this working group aims to harness and develop existing research outputs available internationally in this research domain. Our goal over the next four years is to provide an online resource for academic and industry professionals, who can use these research outputs thereby reducing duplication and facilitating more rapid progress in the development of ubiquitous positioning systems. This paper presents a summary of the research activities and results of the working group to date. In particular, it presents the results of extensive testing to characterize the performance of a range of low-cost MEMS inertial sensors. The test scenarios, data acquisition software, processing tools and results obtained will be fully described and presented. The performance of these sensors in augmenting GNSS positioning is also presented using results obtained from a combination of loosely and tightly coupled Kalman filters. Finally, the future plans for the working group over the next four years and opportunities for wider collaboration will be discussed.
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2011, 22; 237-248
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic probability fields for risk assessment and guidance solutions
    Autorzy:
    Williams, Edwin
    Jin, Yan
    Powiązania:
    https://bibliotekanauki.pl/articles/320753.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    GNSS
    Galileo
    EDAS
    tracking
    firefighting
    multisensor
    fusion
    communication optimization
    Opis:
    Standard Guidance, Navigation, and Control (GN&C) systems take state data from a navigation system and create a trajectory that minimizes some a-priori determined cost function. These cost functions are typically time, money, weight, or any general physically realizable quantity. Previous work has been done to show the effectiveness of using risk as the sole objective function. However, this previous work used Poisson distributions and historical estimates to achieve this goal. In this paper we present the situation-risk assessment (SRA) method contained within the intelligent situation assessment and collision avoidance (iSC) platform. The SRA method uses data clustering, and pattern recognition to create a historically based estimate of guidance probabilities. These are then used in data driven, dynamic models to create the future probability fields of the situation. This probability, along with the other agent’s goals and objectives, are then used to create a minimum risk guidance solution in the nautical environment.
    Źródło:
    Annual of Navigation; 2019, 26; 33-45
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A novel single-step procedure for the calibration of the mounting parameters of a multi-camera terrestrial mobile mapping system
    Autorzy:
    Habib, A.
    Kersting, A.
    Bang, K.
    Rau, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/129833.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    photogrammetry
    calibration
    mobile
    system
    multisensor
    accuracy
    fotogrametria
    kalibracja
    mobilny
    dokładność
    Opis:
    Mobile Mapping Systems (MMS) can be defined as moving platforms which integrates a set of imaging sensors and a position and orientation system (POS) for the collection of geo spatial information. In order to fully explore the potential accuracy of such systems and guarantee accurate multi-sensor integration, a careful system calibration must be carried out. System calibration involves individual sensor calibration as well as the estimation of the inter-sensor geometric relationship. This paper tackles a specific component of the system calibration process of a multi-camera MMS – the estimation of the relative orientation parameters among the cameras, i.e., the inter-camera geometric relationship (lever-arm offsets and boresight angles among the cameras). For that purpose, a novel single step procedure, which is easy to implement and not computationally intensive, will be introduced. The proposed method is implemented in such a way that it can also be used for the estimation of the mounting parameters among the cameras and the IMU body frame, in case of directly georeferenced systems. The performance of the proposed method is evaluated through experimental results using simulated data. A comparative analysis between the proposed single-step and the two-step, which makes use of the traditional bundle adjustment procedure, is demonstrated.
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2011, 22; 173-185
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metoda przetwarzania obrazu termowizyjnego i obrazu wizyjnego we wspólnym systemie cyfrowym
    The method for vision and infrared image processing in a single digital system
    Autorzy:
    Krupiński, M.
    Madura, H.
    Sosnowski, T.
    Bieszczad, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/156633.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    termowizja
    system wieloczujnikowy
    przetwarzanie obrazu
    termovision
    multisensor system
    image processing
    Opis:
    W systemach obserwacyjnych coraz częściej stosuje się zespół kamery termowizyjnej i kamery wideo. Znaczna różnica w standardzie rejestrowanych obrazów sprawia, że ich jednoczesne przetwarzanie jest zadaniem złożonym. W artykule przedstawiono metodę pozwalającą na przetwarzanie obrazu termowizyjnego i obrazu wideo we wspólnym systemie cyfrowym. Zaprezentowane rozwiązanie pozwala na wyświetlanie rejestrowanego obrazu jednocześnie w dwóch różnych standardach wideo. Opracowana metoda została przetestowana i zaimplementowana w sprzęcie.
    Multisensory systems are often used in security systems for border surveillance and protection as well as in various military systems like fire control systems. In security systems combined infrared and vision cameras are used to increase effectiveness and detection efficiency. The reason for wide use of infrared cameras in many surveillance and industrial areas is registration of an image in the infrared waveband, which provides new information about the observed process. A traditional vision camera works in the visible spectrum and is applied in security systems for face recognition and identification providing evidence to incidents in the monitored area. A system consisting of infrared and visible cameras allows observing the scene in two wavebands merging advantages of both technologies. The image digital processing system must be designed with consideration about differences between infrared and vision images. Images from different cameras, besides different information in the picture, can also have different resolution, frame rate and data width. The paper presents an approach to integrating a video channel with infrared channel despite of different pixel clock frequencies and different resolutions of the cameras. A method for integration of two different image data streams from visual and infrared cameras in a single digital system is presented. Furthermore, a method for providing display functionality on monitors working in two different video standards is proposed. The presented system has been tested and
    Źródło:
    Pomiary Automatyka Kontrola; 2012, R. 58, nr 7, 7; 575-577
    0032-4140
    Pojawia się w:
    Pomiary Automatyka Kontrola
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusion Kalman filtration with k-step delay sharing pattern
    Autorzy:
    Duda, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/229569.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fusion Kalman filtration
    multisensor system
    k− step delay sharing pattern
    Opis:
    A fusion hierarchical state filtration with k−step delay sharing pattern for a multisensor system is considered. A global state estimate depends on local state estimates determined by local nodes using local information. Local available information consists of local measurements and k−step delay global information - global estimate sent from a central node. Local estimates are transmitted to the central node to be fused. The synthesis of local and global filters is presented. It is shown that a fusion filtration with k−step delay sharing pattern is equivalent to the optimal centralized classical Kalman filtration when local measurements are transmitted to the center node and used to determine a global state estimate. It is proved that the k−step delay sharing pattern can reduce covariances of local state errors.
    Źródło:
    Archives of Control Sciences; 2015, 25, 3; 307-318
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assisting personal positioning in indoor environments using map matching
    Autorzy:
    Attia, M.
    Moussa, A.
    Zhao, X.
    El-Sheimy, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/130070.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    multisensor
    GPS/INS
    GIS
    real time
    matching
    navigation
    czas rzeczywisty
    nawigacja
    Opis:
    Personal positioning is facing a huge challenge to maintain a reliable accuracy through all applications. Although in outdoor applications, several mobile navigation devices can provide acceptable positioning accuracy, the situation in indoor environment is not the same. Mobile navigation devices mainly contain a global positioning system (GPS) receiver and an inertial measurement unit (IMU). The main drawback in indoor navigation applications is the unavailability of the GNSS signals, which decreases the possibility of obtaining an accurate absolute position solution, as the inertial system (INS) solution will drift with time in the absence of external updates. Several alternatives were presented lately to update the inertial solution such as using Wi-Fi, UWB, RFID, several self-contained sensors, imaging aiding and spatial information aiding. In order to achieve accurate position solution, with low-cost and usable technique, an integrated mobile navigation system integrating GPS/IMU/Wi-Fi and map-matching was developed. The developed system uses the prior knowledge of the indoor geometrical and topological information, as a threshold for the navigation solution, forcing the provided solution to be mostly on the right track. The geometrical and topological information for the building was used to build the geospatial data model. The use of this model was performed by developing a map matching algorithm which uses the geometrical and topological characteristics of the building to locate the user position on the building map. This algorithm was developed based on the geospatial information of the Engineering building, University of Calgary, where the field test occurred. The map-matching algorithm was evaluated by processing and comparing two separate navigation solutions through the study area, one using only the GPS/IMU/Wi-Fi system, and second solution was assisted with the map-matching algorithm which shows significant enhancement in the position solution for the indoor trajectory.
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2011, 22; 39-49
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hierarchical filtration for distributed linear multisensor systems
    Autorzy:
    Duda, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/229333.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multisensor system
    distributed Kalman filtering
    decentralized filtration
    hierarchical fusion
    aggregated information
    Opis:
    In the paper two filtration algorithms for distributed multisensor system are presented. The first one is derived for a linear dynamical system composed of local subsystems described by local state equations. Local estimates are sent to a central station to be fused and formed an optimal global estimate. The second algorithm is derived for a system observed by local nodes that determine estimates of the whole system using local information and periodically aggregated information from other nodes. Periodically local estimates are sent to the central station to be fused. Owing to this a reduced communication can be achieved.
    Źródło:
    Archives of Control Sciences; 2012, 22, 4; 507-518
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fuzja danych nawigacyjnych w przestrzeni filtru Kalmana
    Navigational Data Fusion in a Kalman Filter Space
    Autorzy:
    Stateczny, A.
    Lisaj, A.
    Chafan, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/360644.pdf
    Data publikacji:
    2006
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    filtr Kalmana
    multisensorowa fuzja danych
    EXPLO-SHIP 2006
    Kalman filter
    multisensor data fusion
    Opis:
    W artykule przedstawiono problem wielosensorowej fuzji danych nawigacyjnych. Podano konfigurację wielosensorowego filtru Kalmana, opracowanego w celu wyznaczania wektora stanu obiektu, opartego na jednorodnych danych pozyskiwanych za pomocą zestawu odbiorników satelitarnych.
    The article deals with a problem of multisensor navigational data fusion. The multisensor Kalman filter's configuration is given. The filter has been developed to determine an object vector based on uniform data obtained by a set of satellite receivers.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2006, 11 (83); 279-286
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurable realistic image-based 3D mapping
    Autorzy:
    Liu, W.
    Wang, J.
    Wang, J. J.
    Ding, W.
    Almagbile, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/130115.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    three-dimensional map
    multi-sensor
    measurable image
    virtual reality
    mapa trójwymiarowa
    multisensor
    rzeczywistość
    Opis:
    Maps with 3D visual models are becoming a remarkable feature of 3D map services. High-resolution image data is obtained for the construction of 3D visualized models.The3D map not only provides the capabilities of 3D measurements and knowledge mining, but also provides the virtual experienceof places of interest, such as demonstrated in the Google Earth. Applications of 3D maps are expanding into the areas of architecture, property management, and urban environment monitoring. However, the reconstruction of high quality 3D models is time consuming, and requires robust hardware and powerful software to handle the enormous amount of data. This is especially for automatic implementation of 3D models and the representation of complicated surfacesthat still need improvements with in the visualisation techniques. The shortcoming of 3D model-based maps is the limitation of detailed coverage since a user can only view and measure objects that are already modelled in the virtual environment. This paper proposes and demonstrates a 3D map concept that is realistic and image-based, that enables geometric measurements and geo-location services. Additionally, image-based 3D maps provide more detailed information of the real world than 3D model-based maps. The image-based 3D maps use geo-referenced stereo images or panoramic images. The geometric relationships between objects in the images can be resolved from the geometric model of stereo images. The panoramic function makes 3D maps more interactive with users but also creates an interesting immersive circumstance. Actually, unmeasurable image-based 3D maps already exist, such as Google street view, but only provide virtual experiences in terms of photos. The topographic and terrain attributes, such as shapes and heights though are omitted. This paper also discusses the potential for using a low cost land Mobile Mapping System (MMS) to implement realistic image 3D mapping, and evaluates the positioning accuracy that a measureable realistic image-based (MRI) system can produce. The major contribution here is the implementation of measurable images on 3D maps to obtain various measurements from real scenes.
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2011, 22; 297-310
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    STEPPING – smartphone-based portable pedestrian indoor navigation
    Autorzy:
    Lukianto, Ch.
    Sternberg, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/130858.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    navigation
    GPS/INS
    IMU
    multisensor fusion
    digital sensor systems
    nawigacja
    systemy wielosensorowe
    algorytmy
    systemy czujników cyfrowych
    Opis:
    Many current smartphones are fitted with GPS receivers, which, in combination with a map application form a pedestrian navigation system for outdoor purposes. However, once an area with insufficient satellite signal coverage is entered, these navigation systems cease to function. For indoor positioning, there are already several solutions available which are usually based on measured distances to reference points. These solutions can achieve resolutions as low as the sub-millimetre range depending on the complexity of the set-up. STEPPING project, developed at HCU Hamburg - Germany aims at designing an indoor navigation system consisting of a small inertial navigation system and a new, robust sensor fusion algorithm running on a current smartphone. As this system is theoretically able to integrate any available positioning method, it is independent of a particular method and can thus be realized on a smartphone without affecting user mobility. Potential applications include -- but are not limited to: Large trade fairs, airports, parking decks and shopping malls, as well as ambient assisted living scenarios
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2011, 22; 311-323
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synteza danych w wieloczujnikowym systemie ochrony perymetrycznej obiektów
    Data fusion in multisensor system for perimeter protection
    Autorzy:
    Dulski, R.
    Życzkowski, M.
    Bieszczad, G.
    Kastek, M.
    Szustakowski, M.
    Ciurapiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/209879.pdf
    Data publikacji:
    2011
    Wydawca:
    Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
    Tematy:
    system wieloczujnikowy
    synteza danych
    ochrona perymetryczna
    radar
    kamera wideo
    kamera termowizyjna
    multisensor system
    data fusion
    perimeter protection
    video camera
    thermal camera
    Opis:
    Zastosowanie wieloczujnikowych urządzeń detekcyjnych zdecydowanie poprawia skuteczność wykrywania intruza, zmniejszając jednocześnie prawdopodobieństwo fałszywego alarmu. W artykule zaprezentowano koncepcję syntezy danych w systemie ochrony zbudowanym w oparciu o radar, kamerę wizyjną oraz kamerę termowizyjną. Opisywany system pracuje pod kontrolą oprogramowania dającego możliwość konstrukcji rozbudowanych systemów ochrony dzięki możliwości podłączania różnorodnych czujników w jeden centralnie sterowany system wieloczujnikowy. Graficzny interfejs operatora daje możliwość kontroli czujników, wizualizacji rezultatów procesu syntezy danych z czujników poprzez sieć TCP/IP, a w konsekwencji przekazuje szczegółowe dane o wykrytych intruzach. Zastosowanie czujników pracujących w różnych kanałach informacyjnych powoduje, że system pracuje skutecznie zarówno w dzień jak i w nocy, niezależnie od warunków pogodowych.
    Application of multisensor detecting devices significantly improves the effectiveness of intruder detection and also reduces the false alarm rate. The paper presents the concept of data fusion in a security system comprising of radar and daylight and thermal cameras. The applied control software makes it possible to create advanced multisensor security system, to which different sensor types can be connected using TCP/IP network. The sensor operation can be easily managed by means of graphic user interface, which also visualizes data fusion results and intruder alerts. The integration of sensors working in different information channels assures day/night system operation regardless of weather conditions.
    Źródło:
    Biuletyn Wojskowej Akademii Technicznej; 2011, 60, 2; 205-219
    1234-5865
    Pojawia się w:
    Biuletyn Wojskowej Akademii Technicznej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A PPP baseline approach for bridge passing
    Autorzy:
    Lass, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201435.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    inland waterways
    precise point positioning
    Global Navigation Satellite System
    multisensor data fusion
    multi-antenna
    navigation and timing
    inertial navigation system
    rate of turn
    Opis:
    Global Navigation Satellite Systems (GNSS) are increasingly used as the main source of Positioning, Navigation and Timing (PNT) information for inland water navigation. In order to enable automated driving and facilitate driver assistant functions, it becomes of crucial importance to ensure high reliability and accuracy of the GNSS-based navigation solution, especially in challenging environments. One challenging phase of inland waterway navigation is bridge passing which leads to non-line-of-sight (NLOS) effects such as multipath and loss of tracking. This work presents a Precise Point Positioning (PPP) based algorithm in a two-antenna system where one antenna is at the bow and the other is at the stern. Additionally, gyroscope data from an IMU is used. In contrast to a separated position calculation of the two antennas, only one antenna position is estimated and the other is derived from the baseline between the antennas. This allows for accurate positioning even if one antenna does not receive any GNSS measurements. The presented scheme is evaluated using real measurement data from an inland water scenario with multiple bridges. In comparison with a standard PPP scheme as well as an RTK algorithm, the presented approach shows clear advantages in challenging scenarios.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 33--40
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent autonomous ship navigation using multi-sensor modalities
    Autorzy:
    Wright, R.G.
    Powiązania:
    https://bibliotekanauki.pl/articles/117337.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime autonomous surface ships (MASS)
    artificial intelligence (AI)
    intelligent autonomous ship navigation
    autonomous ship
    autonomous ships navigation
    multiSensor modalities
    unmanned ship
    maritime domain awareness (MDA)
    Opis:
    This paper explores the use of machine learning and deep learning artificial intelligence (AI) techniques as a means to integrate multiple sensor modalities into a cohesive approach to navigation for autonomous ships. Considered is the case of a fully autonomous ship capable of making decisions and determining actions by itself without active supervision on the part of onboard crew or remote human operators. These techniques, when combined with advanced sensor capabilities, have been touted as a means to overcome existing technical and human limitations as unmanned and autonomous ships become operational presently and in upcoming years. Promises of the extraordinary capabilities of these technologies that may even exceed those of crewmembers for decision making under comparable conditions must be tempered with realistic expectations as to their ultimate technical potential, their use in the maritime domain, vulnerabilities that may preclude their safe operation; and methods for development, integration and test. The results of research performed by the author in specific applications of machine learning and AI to shipping are presented citing key factors that must be achieved for certification of these technologies as being suitable for their intended purpose. Recommendations are made for strategies to surmount present limitations in the development, evaluation and deployment of intelligent maritime systems that may accommodate future technological advances. Lessons learned that may be applied to improve safety of navigation for conventional shipping are also provided.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 503-510
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-19 z 19

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies