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Tytuł:
An Interactive Graphical User Interface Module for Soldier Health and Position Tracking System
Autorzy:
Swedan, Wesam F.
Al Issa, Huthifa A.
Aloqoul, Ayat
Alkofahi, Hadeel
Obeidat, Rahaf
Powiązania:
https://bibliotekanauki.pl/articles/2124771.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
graphical user interface
global positioning system
global system for mobile
bioinformatics
tracking system
Opis:
Soldiers are the backbone of any armed force. They usually lose their lives due to the lack of medical assistance in emergency situations. Furthermore, army bases face problems due to the inability to track soldiers’ locations in the field. Hence, this paper proposes an interactive graphical user interface module (IGUIM) for soldiers’ bioinformatics acquisition and emergency reaction during combat, a global positioning system (GPS) is used to track soldiers’ locations through a device carried by the soldier. Soldiers’ bioinformatics are gathered using health monitoring biosensors, bidirectional communication between the soldiers and the army base is established via a global system for mobile (GSM). The proposed interactive module aims to enumerate the soldiers on the battlefield within a database that easily facilitates health monitoring, position tracking and bidirectional communication with each soldier through their identification number. The proposed IGUIM will increase the rate of soldiers’ survival in emergencies, which contributes to preserving the human resources of the army during combat.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 3; 571-571
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Citizen diplomacy and human capital development in Nigeria: a contemporary discourse
Autorzy:
Okeke, Christian Chidi
Powiązania:
https://bibliotekanauki.pl/articles/1375621.pdf
Data publikacji:
2020
Wydawca:
Międzynarodowy Instytut Innowacji Nauka – Edukacja – Rozwój w Warszawie
Tematy:
citizen diplomacy
human capital development
foreign policy
national interest
global system
Opis:
Citizen diplomacy as a key component of diplomacy is fundamental in international relations. Through it, individual citizens help realize their countries’ national interests through unofficial interactions. For Nigeria however, the worry is whether citizen diplomacy can effectively complement official diplomatic activities in the face of the low human-capital development of her citizens. United Nations Development Pro-gramme in 2019 placed Nigeria’s human-development-index value for 2018 at 0.534, positioning the country at 158 out of the 189 countries and territories surveyed. It also classified 51.4 percent of Nigerian population as being multi-dimensionally poor with an additional 16.8 percent categorized as being vulnerable to multidimensional poverty. In view of this challenge therefore, this paper examined the implication of the low human-capital development on foreign relations of Nigeria. Data was collated from secondary sources while qualitative descriptive technique was used for analysis. The paper found that Nigeria’s current human capital development trajectory is incapable of stimulating citizen diplomacy into complementing the country’s official diplomatic relations with other states. It also found that this situation accounts for the failure by Nigeria to actualize most of her foreign policy objectives. The paper therefore recommended improved investment in wellbeing of Nigerians for better outing in foreign relations.
Dyplomacja obywatelska jako kluczowy komponent dyplomacji ma znaczenie fundamentalna w stosunkach międzynarodowych. Dzięki niej poszczególni obywatele pomagają realizować interesy narodowe swoich krajów po-przez nieoficjalne interakcje. W przypadku Nigerii niepokoi jednak kwestia efektywności uzupełniania przez dyplomację obywatelską czynności dyplomatycznych ze względu na niski poziom rozwoju kapitału ludzkiego jej obywateli. Program Narodów Zjednoczonych ds. Rozwoju w roku 2019 uplasował wartość wskaźnika rozwoju społecznego Nigerii na rok 2018 na poziomie 0,534, czyli na 158 miejscu z 189 badanych krajów i terytoriów. Sklasyfikował również 51,4 procent populacji Nigerii jako biednych wielowymiarowo, a dodatkowe 16,8 procent sklasyfikowano jako narażone na wielowymiarowe ubóstwo. W związku z tym w niniejszym dokumencie przeanalizowano wpływ niskiego rozwoju kapitału ludzkiego na stosunki Nigerii z zagranicą. Dane zostały zebrane ze źródeł wtórnych, natomiast w analizie została zastosowana jakościowa technika opisowa. W artykule wskazuje się, że w Nigerii aktualnie trajektorie rozwoju kapitału ludzkiego nie są w stanie stymulować dyplomację obywatelską w zakresie uzupełniania oficjalnych relacji dyplomatycznych z innymi krajami. Zostało odnotowano, że ta sytuacja także jest przyczyną niepowodzenia Nigerii w kontekście aktualizacji celów polityki międzynarodowej Nigerii. W tym artykule zawarte są zalecenia poprawienia inwestycji w dobrostan Nigeryjczyków dla lepszych wyników w relacjach z zagranicą.
Źródło:
International Journal of New Economics and Social Sciences; 2020, 11(1); 297-314
2450-2146
2451-1064
Pojawia się w:
International Journal of New Economics and Social Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Korean WA-DGNSS User Segment Software Design
Autorzy:
Shah, S. T.
Choi, W.S.
Han, W.Y.
Yun, H.
Kee, C.
Powiązania:
https://bibliotekanauki.pl/articles/116066.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
global navigation satellite system (GNSS)
Global Positioning System GPS
User Segment
GPS Data Processing Classes
Opis:
Korean WA‐DGNSS is a large scale research project funded by Ministry of Land, Transport and Maritime Affairs Korea. It aims to augment the Global Navigation Satellite System by broadcasting additional signals from geostationary satellites and providing differential correction messages and integrity data for the GNSS satellites. The project is being carried out by a consortium of universities and research institutes. The research team at Electronics and Telecommunications Research Institute is involved in design and development of data processing softwares for wide area reference station and user segment. This paper focuses on user segment software design. Korean WA‐DGNSS user segment software is designed to perform several functions such as calculation of pseudorange, ionosphere and troposphere delays, application of fast and slow correction messages, and data verification. It is based on a layered architecture that provides a model to develop flexible and reusable software and is divided into several independent, interchangeable and reusable components to reduce complexity and maintenance cost. The current version is designed to collect and process GPS and WADGNSS data however it is flexible to accommodate future GNSS systems such as GLONASS and Galileo.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 69-74
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GPS/GNSS spoofing and the real-time single-antenna-based spoofing detection system
Autorzy:
Ochin, E.
Powiązania:
https://bibliotekanauki.pl/articles/135406.pdf
Data publikacji:
2017
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
Global Navigation Satellite System
Global Positioning System
anti-terrorism
anti-spoofing
transport safety
spoofer
spoofing detection algorithm
Opis:
The idea of C/A codes GPS/GNSS Spoofing (Substitution), or the ability to mislead a satellite navigation receiver into establishing a position or time fix which is incorrect, has been gaining attention as spoofing has become more sophisticated. Various techniques have been proposed to detect if a receiver is being spoofed – with varying degrees of success and computational complexity. If the jammer signals are sufficiently plausible then the GNSS receiver may not realize it has been duped. There are various means of detecting spoofing activity and hence providing effective mitigation methods. In this paper, a novel signal processing method applicable to a single antenna handset receiver for spoofing detection has been described. Mathematical models and algorithms have been developed to solve the problems of satellite navigation safety. What has been considered in the paper is a spoofing detection algorithm based on the analysis of a civil satellite signal generated by mobile C/A GPS/GNSS single-antenna receivers. The work has also served to refine the civilian spoofing threat assessment by demonstrating the challenges involved in mounting a spoofing attack.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 145-153
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An influence of the covariance between single orbit parameters on the accuracy of observations of the pseudo-ranges and phase differences
Autorzy:
Skeivalas, Jonas
Paršeliūnas, Eimuntas
Putrimas, Raimundas
Šlikas, Dominykas
Powiązania:
https://bibliotekanauki.pl/articles/221830.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Global Positioning System
ephemeris
Doppler effect
dispersion
geodesy
Opis:
The possibilities to improve values of the satellite orbit elements by employing the pseudo-ranges and differences of carrier phase frequencies measured at many reference GPS stations are analysed. An improvement of orbit ephemeris is achieved by solving an equation system of corrections of the pseudo-ranges and phase differences with the least-squares method. Also, equations of space coordinates of satellite orbit points expressed by ephemeris at fixed moments are used. The relation between the accuracy of the pseudo-ranges and phase differences and the accuracy of the satellite ephemeris is analysed. Formulae for estimation of the influence of the ephemeris on the measured pseudo-ranges and phase differences and for prediction of the accuracy of the pseudo-ranges and phase differences were obtained. An influence of the covariance between single orbit parameters on the accuracy of the pseudo-ranges and phase differences is detected.
Źródło:
Metrology and Measurement Systems; 2020, 27, 1; 131-140
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Types and Systems of Actors in Regional Development: Their Function and Regulatory Potential
Autorzy:
Blažek, Jiří
Hampl, Martin
Powiązania:
https://bibliotekanauki.pl/articles/623737.pdf
Data publikacji:
2009-09-29
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
regional development actors
balances versus asymmetric systems
social capital
developed countries
global system
Opis:
Differentiation of actors derives primarily from the distribution of power and wealth in a society, and thus it has always played an exceptionally significant role. However, as a consequence of the hierarchical organisation of the society this differentiation was noticeably asymmetrical. The non-equivalence of partial subjects/actors of regional development has led to the understandable domination of ‘deterministic’ relations and the plurality of interests and then to the dominance of ‘competitive’ relations. Only gradually do interactions of a cooperative kind successively break through the growth of mutual interconnections, linkages and necessity of social elements and partial systems, and thus the increasing of organic nature of (geo)societal systems. This will be finally illustrated through the difference between ‘symmetric’ systems of actors in developed countries and the ‘asymmetric’ global system.
Źródło:
European Spatial Research and Policy; 2009, 16, 1
1231-1952
1896-1525
Pojawia się w:
European Spatial Research and Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-organizing wireless monitoring system for cargo containers
Autorzy:
Katulski, R. J.
Sadowski, J.
Stefański, J.
Ambroziak, S. J.
Powiązania:
https://bibliotekanauki.pl/articles/258794.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
wireless monitoring
container transport
container module realization
global system concept
ad-hoc networks
Opis:
This paper presents a description of new global monitoring system for containers with its layer-modular structure, as a solution for enhance security and efficiency of container transport with particular emphasis on the practical implementation of that system for maritime container terminals. Especially the Smart Container Module (SCM) architecture and its operation as a part of the Self-Organizing Container Monitoring Network is presented.
Źródło:
Polish Maritime Research; 2009, 3; 45-50
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling GPS positioning performance in Northwest Passage during extreme space weather conditions
Autorzy:
Špoljar, D.
Jukić, O.
Sikirica, N.
Lenac, K.
Filjar, R.
Powiązania:
https://bibliotekanauki.pl/articles/1841553.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Positioning System
Northwest Passage
Global Navigation Satellite System
Software Defined Radio (SDR)
GNSS SDR Receiver
GPS Position
Opis:
New shipping routes are emerging as a result of iceberg melting in polar regions, allowing for more efficient transport of people and goods. Opening of the Northwest Passage, the maritime route connecting Pacific Ocean with Atlantic Ocean through Arctic region, is considered such a development. The increasing transport exploitation of the Northwest Passage requires the quality assessment of maritime navigation aids for compliance with the established requirements. Here we contribute to the subject with addressing the polar commercial-grade GPS positioning performance in the Northwest Passage in the extreme positioning environment conditions during the massive 2003 space weather storm, a space weather event similar to the Carrington Storm of 1859, the largest space weather event recorded. The GPS positioning environment in the Northwest Passage during the Carrington-like storm in 2003 was reconstructed through the GNSS SDR receiver-post processing of the experimental GPS observations. The raw GPS dual-frequency pseudoranges and navigation messages were collected at the International GNSS Service (IGS) reference station at Ulukhaktok, Victoria Island, Canada. Pseudorange processing and GPS position estimation were performed in three scenarios of pre-mitigation of the ionospheric effects, known as the single major contributor GPS positioning error: (i) no corrections applied, (ii) Klobuchar-based corrected GPS positioning, and (iii) dual-frequency corrected GPS positioning. Resulting GPS positioning error vectors were derived as positioning error residuals from the known reference station position. Statistical properties of the northing, easting, and vertical components of the GPS positioning error vector were analyzed with a software developed in the R environment for statistical computing to select suitable methods for the GPS positioning error prediction model development. The analysis also identified the most suitable theoretical fit for experimental statistical distributions to assist the model development. Finally, two competitive GPS positioning error prediction models were developed, based on the exponential smoothing (reference) and the generalized regression neural networks (GRNN) (alternative) methods. Their properties were assessed to recommend their use as mitigation methods for adverse massive space weather effects in polar regions.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 165-169
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ASI activities in CEGROP II framework: Discussion of the results
Autorzy:
Vespe, F.
Garramone, L.
Marzo, C.
Rutigliano, P.
Pacione, R.
Powiązania:
https://bibliotekanauki.pl/articles/224452.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
osuwiska
GPS
system pozycjonowania obiektów
CERGOP
landslides
Global Positioning System
Opis:
ASI/CGS contribution to CERGOP II project covered the following topics: landslide monitoring, production and quality check of zenith total delays estimated for a global as well as regional GPS networks devoted to meteorology applications, RTK and navigation tests, critical analysis of GPS long time series helpful for geodynamic as well atmospheric investigations. For what concern the landslides monitoring the two sites under investigation: Aliano and Avigliano are located in Basilicata region, (South of Italy). These sites are affected by a dramatic creep of the ground which in the past was the cause of severe damages to the buildings and roads in the areas. We will show the state of art of the activities comparing GPS with Perrnanent Scatter IN-SAR technique For what concern the routine production of ZTD we will show a critical comparisons of our solutions with radio balloon observations and a discussion about the assessment of their reliability. Finally the results of a navigation experiment by using differential correction provided by EUREF-NTRIP service will be shown.
Źródło:
Reports on Geodesy; 2006, z. 1/76; 201-215
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wyznaczanie różnic wysokości z wykorzystaniem niwelacji satelitarnej
The height differences appointment using satellite leveling
Autorzy:
Dawidowicz, K.
Lamparski, J.
Świątek, K.
Powiązania:
https://bibliotekanauki.pl/articles/341241.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
Globalny System Pozycyjny
niwelacja satelitarna
Global Positioning System
satellite leveling
Opis:
W pracy przedstawiono analizy dotyczące wpływu długości sesji obserwacyjnych GPS na wyniki wyznaczania różnic wysokości metodą niwelacji satelitarnej. W tym celu wykorzystano, przeprowadzone w ciągu kilku dni, ośmiogodzinne obserwacje wykonane na trzech punktach sieci testowej. Z przeprowadzonych analiz wynika, że sesje dwugodzinne mogą okazać się zbyt krótkie do wyznaczenia wysokości z dokładnością do 1–2 cm.
The paper presents analyses concerning the influence of length GPS observational session on heights differences appointment results with satellite leveling. In elaboration the eight-hour GPS observation, carried within several days, on three points of test networks were used. Carried analyses have exerted that the two-hour GPS session can be too short for points appointment with 1-2 cm accuracy.
Źródło:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum; 2008, 7, 1; 29-34
1644-0668
Pojawia się w:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transformation Tendencies of the Global Monetary System
Transformacyjne tendencje w globalnym systemie monetarnym
Autorzy:
Tokar, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/549102.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
Transformation
tendencies
global monetary system
transformacja
tendencje
globalny system monetarny
Opis:
The article reveals the contradiction between the role of the US dollar as the main global re-serve currency and its national origin, which causes the misuse by the US government to cover the chronic trade and budget deficit. The author researches the crisis management transformation tendencies of the global mone-tary system, namely the weakening positions of the US dollar and euro as the key reserve curren-cies; the gradual formation of the regional monetary unions; the shifting to the national currencies in mutual trade and settlement operations without the US dollar mediation; the gradual replace-ment of the US dollar by the Chinese Yuan as the key reserve currency. The author discloses that the future key regional currencies are “amero” in the USA, Canada and Mexico; “afro” in Africa; “pachu” in Latin America; ACU in the Asian and Pacific region; “Golden dinar” in the Persian Gulf region; “sucre” in the Caribbean region; “euras” in the Europe-an and Asian Economic Commonwealth.
Artykuł ukazuje sprzeczności pomiędzy rolą dolara amerykańskiego jako głównej globalnej waluty rezerwowej a jego narodowym charakterem, co powoduje niewłaściwe jego wykorzystanie przez rząd Stanów Zjednoczonych do pokrywania chronicznego handlowego i budżetowego deficytu. Autor badaniom poddaje tendencje transformacyjne w ramach zarządzania kryzysowego globalnym systemem pieniężnym, w szczególności osłabianie się pozycji dolara i euro jako kluczowych walut re-zerwowych, stopniowe kształtowanie się regionalnych unii walutowych, zwrot w kierunku walut naro-dowych we wzajemnym handlu i operacjach inwestycyjnych bez pośrednictwa dolara, stopniowe zastę-powanie dolara amerykańskiego przez chińskiego yuana jako kluczowej waluty rezerwowej. Autor przewiduje, że kluczowymi regionalnymi walutami w przyszłości będą „amero” w Stanach Zjednoczonych, Kanadzie i Meksyku; „afro” w Afryce; „pachu” w Ameryce Łacińskiej; ACU w regionie Azji i Pacyfiku; „złoty dinar” w regionie Zatoki Perskiej; „Sucre” w regionie Karaibów: „euras” we Wspólnocie Gospodarczej Europy i Azji.
Źródło:
Nierówności Społeczne a Wzrost Gospodarczy; 2013, 31; 67-72
1898-5084
2658-0780
Pojawia się w:
Nierówności Społeczne a Wzrost Gospodarczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of GSM, LTE and Wi-Fi Electromagnetic Radiation in Dwellings
Autorzy:
Karan, Y.
As, N.
Şahın, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031943.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
wireless network adapter
electromagnetic radiation
electromagnetic pollution
global system for mobile communications
wireless fidelity
Opis:
Electromagnetic radiation exposure increases with the rise of the wireless communication devices. Electromagnetic radiation, especially near 2400 MHz band, has gradually increased with the widespread of wireless fidelity adapter in indoor environment. In this study, electromagnetic radiation in dwellings where different Wi-Fi adapters and routers are used was assessed by measuring the electric field and compared with other electromagnetic radiation source and the limits set by the Information and Communication Technologies Authority. Measurements were taken in the range of 760-2690 MHz bands used by GSM, 3G/LTE and Wi-Fi technologies. The detected values for all frequencies are significantly lower than the limits of the Information and Communication Technologies Authority. Among the electromagnetic radiation sources, electromagnetic radiation of Wi-Fi adapter is higher than GSM/3G/LTE sources radiation in dwellings. Electromagnetic radiation values in nearest point of high power adapter Wi-Fi antenna are close to the Information and Communication Technologies Authority limit value. Results show that electromagnetic radiation based on Wi-Fi adapters or routers can be higher than GSM based electromagnetic radiation.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 509-512
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Globalny system innowacji
The global innovation system
Autorzy:
Boguski, J.
Powiązania:
https://bibliotekanauki.pl/articles/228053.pdf
Data publikacji:
2010
Wydawca:
Wyższa Szkoła Menedżerska w Warszawie
Tematy:
koncepcja systemu
globalny system innowacji
global innovation system
concept of system
Opis:
Wpływ globalnego otoczenia powoduje, iż wielu państwom coraz trudniej generować innowacje. Racjonalnym wyjściem wydaje się zbudowanie globalnego systemu, w ramach którego będą funkcjonować kraje oraz kontynenty. Stąd niniejszy artykuł został poświęcony koncepcji Globalnego Systemu Innowacji.
The influence of the global environment causes the difficulties in generating and applying innovations. Therefore the good idea is to build the Global Innovation System in which the countries and continents will function. This article is devoted to a concept of the Global Innovation System.
Źródło:
Postępy Techniki Przetwórstwa Spożywczego; 2010, 2; 140-144
0867-793X
2719-3691
Pojawia się w:
Postępy Techniki Przetwórstwa Spożywczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technologia nawigacyjna w ochronie srodowiska
Navigation technology in environmental protection
Autorzy:
Brach, M
Powiązania:
https://bibliotekanauki.pl/articles/882279.pdf
Data publikacji:
2009
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
nawigacja satelitarna
systemy satelitarne
system Global Navigation Satelite System
system GNS zob.system Global Navigation Satelite System
system Glonass
system GPS
system ASG-Eupos
odbiorniki satelitarne
wykorzystanie
ochrona srodowiska
ochrona przyrody
lokalizacja zwierzat
Opis:
Ochrona środowiska jest dziedziną wiedzy odnoszącą się w sposób ścisły do przestrzeni geograficznej – przestrzeni, która przy tym poziomie antropopresji wymaga metod pozwalających na szybkie podejmowanie prawidłowych decyzji. Doskonałym narzędziem wspomagającym proces decyzyjny są systemy informacji przestrzennej, będące tą gałęzią wiedzy, której rozwój w sposób ścisły zależy od źródeł danych i metod ich pozyskiwania. Jedną z najlepszych technologii mogących zaspokoić te potrzeby są systemy nawigacji satelitarnej. Ta stosunkowo prosta i szybka metoda realizacji pomiarów bezpośrednio w terenie znalazła wielu zwolenników szczególnie wśród osób poszukujących rozwiązań mogących zastąpić kosztowne i czasochłonne klasyczne pomiary geodezyjne. Dokonując wyboru pozornie prostej technologii, jaką są systemy nawigacji satelitarnej należy mieć świadomość zarówno jej ograniczeń, ale także nie w pełni wykorzystywanego potencjału.
Knowledge about environmental protection refers strictly to geography information. High level of anthropogenic impact needs efficient methods in order to make good decisions. Geographical information system (GIS) is a prefect tool which helps in this situation. On the other hand GIS must be supplied by fast and accurate geographical information. The best solution to this is global navigation satellite systems technology. It is useful especially for users who want to replace cost and time consuming geodetic surveying. Using global navigation technology is simple but it has some limitations as well. It is also observed that many users can not use navigation receiver correctly and they loose a chance for accurate data.
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2009, 11, 2[21]; 124-134
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przeliczanie i transformacja współrzędnych pomiędzy układami odniesienia
On version and transformation of coordinates between reference systems
Autorzy:
Mendel, M.
Powiązania:
https://bibliotekanauki.pl/articles/235845.pdf
Data publikacji:
2011
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
geoida
GPS
układy współrzędnych
Global Positioning System
coordinate systems
Opis:
W artykule przedstawiono zagadnienia związane przeliczaniem i transformacją współ- rzędnych w odwzorowaniach kartograficznych. Zamieszczono gotowe wzory i algorytmy służące do realizacji zadań związanych z przeliczaniem i transformacją współrzędnych. Objaśniono również podstawowe pojęcia używane w geodezji i kartografii.
In the paper the issues concerning conversion and transformation of coordinates in map projections were presented. The formulae and the algorithms for carrying out the tasks connected with the conversion and the transformation of coordinates were quoted. The basic terms used in geodesy and cartography were also explained.
Źródło:
Problemy Techniki Uzbrojenia; 2011, R. 40, z. 119; 7-19
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bio Mapping for Purposes of City Management - Practical Reflections
Autorzy:
Szołtysek, Jacek
Twaróg, Sebastian
Powiązania:
https://bibliotekanauki.pl/articles/522266.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Global Position System (GPS)
Miasto
Zarządzanie miastem
City
City management
Opis:
The article offers information on the failing of bio mapping as a tool for city management. It informs that city managers consider the bio mapping tool as imperfect and unreliable for determining particular actions. It describes that preparation stage involves selection and training of the volunteers, and advises to be equipped with map for a walking journey within designated area and carry devices like Galvanic Skin Response (GSR) and Global Positioning System (GPS).
Źródło:
Journal of Economics and Management; 2013, 11; 113-123
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Availability of the GNSS geodetic networks position during the hydrographic surveys in the ports
Autorzy:
Specht, C.
Makar, A.
Specht, M.
Powiązania:
https://bibliotekanauki.pl/articles/116211.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
hydrographic survey
IHO S-44
Global Positioning System (GPS)
GLONASS
gedetic network
exclusive order
special order
Opis:
Geodetic network GNSS receivers are more commonly associated with positioning systems used in maritime hydrography. In terms of positioning accuracy when no terrain obstacles are present, they meet international hydrographic surveys standards (S‐44) fully. Those standards are defined as 1m (0.95) for Exclusive Order and 2m (0.95) for Special Order. It is equally as important to ensure access to position which error is not higher than above mentioned maximum values. This is most often determined by the density of port infrastructure. This article presents the results of analysis of availability of hydrographic system that operates based on geodetic GNSS networks. Hydrographic surveys in question were undertaken in inner basins with diverse infrastructure. Three representative types of ports were selected for this reason: fishing type (Hel), medium sized, modern commercial type (Gdynia) and highly congested, narrow canal type (Gdansk – Motlawa). A nonpublic, geodetic GNSS network was used for all surveys. It is worth mentioning that the above network is at the moment the only available network that provides both GPS and GLONASS corrections. The surveys provided evidence that geodetic GNSS networks can be successfully utilised to determine position of hydrographic vessel in low and moderately developed ports as well as in Exclusive and Special Orders. In highly congested ports however, the availability of the above mentioned method of measurement can be insufficient to realise a survey.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 657-661
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modernization of Maritime DGPS in Poland
Autorzy:
Dziewicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/116983.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Differential GPS (DGPS)
Global Positioning System GPS
IMO Requirements
IALA Recommendations
e-Navigation
Maritime DGPS
Radionavigation
Opis:
Some new techniques and functionality adopted for modernization of national DGPS systems by maritime administrations in Europe are presented. Any solution adopted must meet international requirements: IMO standards and IALA e-NAV Committee recommendations. The results of DGPS Re-capitalization Meeting in Gdynia 2008 are presented. Modernization and re-engineering of maritime DGPS must take into account backward compatibility with existing onboard receivers as well as future trends towards e-Navigation. Operational and legal status of the Polish DGPS network is also mentioned in this context.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 39-42
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Satellite Navigation Techniques for Vessel’s Drift Determination in Piloting Areas
Autorzy:
Blokus-Roszkowska, A.
Jurdziński, M.
Powiązania:
https://bibliotekanauki.pl/articles/117034.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Satellite Navigation Technics
Global Navigation Satellite System (GNSS)
Pilot Navigation
Piloting Area
Vessel's Drift
satellite navigation system
Ship Control System
Global Positioning System GPS
Opis:
The paper deals with use the satellite navigation system for increase safety of navigation in difficult areas. There have been presented an algorithm to ship control procedure during environmental disturbances in narrow passages.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 389-392
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Effect of Urban Development on the Accuracy of the GPS/EGNOS System
Autorzy:
Bober, R.
Szewczuk, T.
Wolski, A.
Powiązania:
https://bibliotekanauki.pl/articles/116270.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Global Positioning System GPS
EGNOS
Effect of Urban Development
Accuracy
Accuracy of Position
positioning system
Port of Szczecin
Opis:
This article presents the results of research into the accuracy of position determination by a GPS/EGNOS system in a densely built-up residential area. These results are compared with the relevant results obtained for a position in an open area.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 3; 235-238
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GNSS for an Aviation Analysis Based on EUPOS and GNSS/EGNOS Collocated Stations in PWSZ CHELM
Autorzy:
Fellner, A.
Cwiklak, J.
Jafernik, H.
Trominski, P.
Zajac, J.
Banaszek, K.
Powiązania:
https://bibliotekanauki.pl/articles/117333.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
aviation
EGNOS
satellite based augmentation system (SBAS)
geographic information system (GIS)
Global Positioning System GPS
ICAO Requirements
Air Navigation
Opis:
Under the umbrella of PWSZ Chelm, taking account of future implementation of navigation using EUPOS and GNSS based on EGNOS several planned actions were carried out in the 2005-2006. The actions in particular contribute to: 1. ICAO and EGNOS requirements and coverage area (Chelm Town located near Polish-Ukrainian border is also at the east border of planned EGNOS coverage for ECAC states). 2. Preparatory activities to establishing the EUPOS station in PWSZ Chelm. Cooperation of PWSZ Chelm and ULC (Polish Aviation Regulator) in the frame of conventional NAV aids use and GNSS implementation in aviation. 3. Analysis of ICAO requirements and methods of testing SIS (Signal In Space) needed to certify GNSS in Poland for use for an aviation. 4. Preparatory activities to establishing the EGNOS SIS monitoring station based on EUROCONTROL Pegasus software and GNSS/EGNOS receiver Septentrio PolaRx2e. 5. Analysis of methods for exchange of information between EUPOS and EGNOS SIS station to initiate the application of satellite positioning systems to air navigation in Poland. The project EUPOS is a European initiative aiming at establishment of a uniform DGNSS (Differential Global Navigation Satellite System) basis infrastructures in Central and Eastern European countries including Chelm Town where PWSZ is localized playing vital role in GIS/GNSS implementation in the region and Polish aviation.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 351-356
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global Navigation Satellite Systems – Perspectives on Development and Threats to System Operation
Autorzy:
Czaplewski, K.
Goward, D.
Powiązania:
https://bibliotekanauki.pl/articles/117128.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Global Positioning System (GPS)
satellite navigation
satellite navigation and timing technology
e-Loran
GLONASS
BeiDo
EGNOS
Opis:
The rapid development of satellite navigation and timing technologies and the broad availability of user equipment and applications has dramatically changed the world over the last 20 years. It took 38 years from the launch of the world’s first artificial satellite, Sputnik 1, (October 4, 1957) to the day NAVSTAR GPS became fully operational (July 17, 1995). In the next 20 years user equipment became widely available at the consumer level, and 10 global and regional satellite systems were partially or fully deployed. These highly precise signals provided free to the user have been incorporated by clever engineers into virtually every technology. At the same time interference with these signals (spoofing and jamming) have become a significant day to day problem in many societies and pose a significant threat to critical infrastructure. This paper provides information on the current status and development of navigation satellite systems based on data provided by the systems' administrators. It also provides information on Loran/eLoran, a system which many nations have selected as a complement and backup for satellite navigation systems.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 183-192
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
BeiDou and Galileo, Two Global Satellite Navigation Systems in Final Phase of the Construction, Visibility and Geometry
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/117164.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
BeiDou
Galileo
GNSS construction
GNSS geometry
GNSS visibility
Global Positioning System (GPS)
Dilution of Precision (DOP)
Opis:
Spatial segment is one of three segments of each satellite navigation systems (SNS). Nowadays two SNSs, GPS and GLONASS, are fully operational, two next SNSs, BeiDou in China and Galileo in Europe, are in final phase of the construction. In the case of China system this segment will consist of 35 satellites with three types of orbits ? medium (MEO), geostationary (GEO) and inclined geosynchronous (IGSO). As GEO and IGSO satellites can be used in China and Asia-Pacific region only, BeiDou MEO constellation with 27 fully operational satellites will be taken into account in this paper. The orbital planes of the Galileo constellation will be divided in “slots” that contains at least one operational satellite. The Galileo reference constellation has 24 nominal orbital positions or operational slots in MEO homogeneously distributed in 3 orbital planes; i.e. 8 slots equally spaced per plane. As the error of user’s position obtained from both systems depends on geometry factor DOP (Dilution Of Precision) among other things the knowledge of the number of satellites visible by the user above given masking elevation angle Hmin and the distributions of DOP coefficient values, GDOP in particular, is very important. The lowest and the greatest number of satellites visible in open area by the observer at different latitudes for different Hmin, the percentage of satellites visible above angle H, distributions (in per cent) of satellites azimuths and GDOP coefficient values for different Hmin for BeiDou and Galileo systems at different latitudes are presented in the paper.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 381-387
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An SDR-based Study of Multi-GNSS Positioning Performance During Fast-developing Space Weather Storm
Autorzy:
Filić, M.
Filjar, R.
Ruotsalainen, L.
Powiązania:
https://bibliotekanauki.pl/articles/117597.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
utilization of GNSS
Global Positioning System (GPS)
GLONASS
RTKLIB
multi-GNSS
space weather storm
GNSS SDR Receiver
Opis:
The understanding of the ionospheric effects on GNSS positioning performance forms an essential pre-requisite for resilient GNSS development. Here we present the results of a study of the effects of a fast-developing space weather disturbance on the positioning performance of a commercial-grade GPS+GLONASS receiver. Using experimentally collected pseudoranges and the RTKLIB, an open-source software-defined GNSS radio receiver operating in the simulation mode, we assessed GNSS positioning performance degradations for various modes of GNSS SDR receiver operation, and identified the benefits of utilisation of multi-GNSS and ionospheric error correction techniques.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 395-400
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigate Bending Effect of Wearable GPS Patch Antenna with Denim and Polyester Fabric Substrate
Autorzy:
Radhakrishna, Kavinesh S.
Shakhirul, M. S.
Lee, Y. S.
Khairina, K. N.
Syafiqah, A. R. A.
Powiązania:
https://bibliotekanauki.pl/articles/27311855.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
denim and polyester fabric substrates
textile antenna
global positioning system (GPS)
Opis:
In high technologies today, wearable devices have become popular. Wearable technology is a body sensing system that supports application of health observance and tracking through a wearable Global Positioning System (GPS). The design of the patch antennas is highly significant for the brilliance of the wearable patch antennas. This paper focuses on analyzing the bending effect on return loss and frequency between three types of GPS patch antenna. Types of GPS patch antennas that have been designed in this project are with different substrates and different designs. The wearable patch antenna has been designed and analyse using CST software. As a result, able to analysis the reflection coefficient (S11), radiation patterns, and analytical approach for patch antenna bending effect were obtained.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 2; 225--231
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Matlab Implementation of Differential GPS for Low-cost GPS Receivers
Autorzy:
Ali, Q
Montenegro, S.
Powiązania:
https://bibliotekanauki.pl/articles/116127.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
marine navigation
Global Positioning System GPS
Matlab, Differential GPS (DGPS)
GPS Receiver
unmanned aerial vehicle (UAV)
Global Navigation Satellite System (GNSS)
RINEX Format
Opis:
A number of public codes exist for GPS positioning and baseline determination in off-line mode. However, no software code exists for DGPS exploiting correction factors at base stations, without relying on double difference information. In order to accomplish it, a methodology is introduced in MATLAB environment for DGPS using C/A pseudoranges on single frequency L1 only to make it feasible for low-cost GPS receivers. Our base station is at accurately surveyed reference point. Pseudoranges and geometric ranges are compared at base station to compute the correction factors. These correction factors are then handed over to rover for all valid satellites observed during an epoch. The rover takes it into account for its own true position determination for corresponding epoch. In order to validate the proposed algorithm, our rover is also placed at a pre-determined location. The proposed code is an appropriate and simple to use tool for post-processing of GPS raw data for accurate position determination of a rover e.g. Unmanned Aerial Vehicle during post-mission analysis.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 343-350
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nominal and Real Accuracy of the GPS Position Indicated by Different Maritime Receivers in Different Modes
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/117133.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Global Positioning System GPS
Navigational System
Navigational System Receiver
Accuracy of Position
GPS Receiver
GPS Position Accuracy
Dilution of Precision (DOP)
Opis:
Nowadays on the ship’s bridge two or even more GPS receivers are installed. As in the major cases the coordinates of the position obtained from these receivers differ the following questions can be posed – what is the cause of this divergence, which receiver in the first must be taken into account etc. Based on information published in annual GPS and GNSS receiver survey it was estimated the percentage of GPS receivers designed for marine and/or navigation users. The measurements of GPS position based on the four different stationary GPS receivers were realized in the laboratory of Gdynia Maritime University in Poland in the summer 2012. The coordinates of the position of all these receivers were registered at the same time. The measurements in mode 3D were made for different input data, the same for all receivers. The distances between the individual unit’s antenna were considered also. Next measurements in mode 3D also were realized on two ships in different European ports. Additional measurements were made in mode 2D with three receivers for different their’s antenna heights. The results showed that the GPS position accuracy depends on the type of the receiver and its technical parameters particularly.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 11-19
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental studies on the relationship between HDOP and position error in the GPS system
Autorzy:
Specht, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/2052120.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Global Positioning System
GPS
Horizontal Dilution of Precision
HDOP
position error
Opis:
2D position error in the Global Positioning System GPS depends on the horizontal dilution of precision (HDOP) and User Equivalent Range Error UERE. The non-dimensional HDOP coeffcient, determining the influence of satellite distribution on the positioning accuracy, can be calculated exactly for a given moment in time. However, the UERE value is a magnitude variable in time, especially due to errors in radio propagation (ionosphere and troposphere effects) and it cannot be precisely predicted. The variability of the UERE causes the actual measurements (despite an exact theoretical mathematical correlation between the HDOP value and the position error) to indicate that position errors differ for the same HDOP value. The aim of this article is to determine the relation between the GPS position error and the HDOP value. It is possible only statistically, based on an analysis of an exceptionally large measurement sample. To this end, measurement results of a 10-day GPS measurement campaign (900,000 fixes) have been used. For HDOP values (in the range of 0.6-1.8), position errors were recorded and analysed to determine the statistical distribution of GPS position errors corresponding to various HDOP values. The experimental study and statistical analyses showed that the most common HDOP values in the GPS system are magnitudes of: 0.7 ( = 0.353) and 0.8 ( = 0.432). Only 2.77% of fixes indicated an HDOP value larger than 1. Moreover, 95% of measurements featured a geometric coeffcient of 0.973 - this is why it can be assumed that in optimal conditions (without local terrain obstacles), the GPS system is capable of providing values of HDOP ≤ 1, with a probability greater than 95% (2). Obtaining a low HDOP value, which results in a low GPS position error value, calls for providing a high mean number of satellites (12 or more) and low variability in their numer.
Źródło:
Metrology and Measurement Systems; 2022, 29, 1; 17-36
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
VR teleoperation to support a GPS-free positioning system in a marine environment
Autorzy:
Lager, M.
Topp, E. A.
Malec, J.
Powiązania:
https://bibliotekanauki.pl/articles/1841575.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
navigation systems
autonomous surface vehicle
graphical user interface
Global Positioning System
Global Navigation Satellite System
unmanned ground vehicles
terrain-aided navigation
VR teleoperation
Opis:
Small autonomous surface vehicles (ASV) will need both teleoperation support and redundant positioning technology to comply with expected future regulations. When at sea, they are limited by a satellite communication link with low throughput. We have designed and implemented a graphical user interface (GUI) for teleoperation using a communication link with low throughput, and one positioning system, independent of the Global Positioning System (GPS), supported by the teleoperation tool. We conducted a user study (N=16), using real-world data from a field trial, to validate our approach, and to compare two variants of the graphical user interface (GUI). The users experienced that the tool gives a good overview, and despite the connection with the low throughput, they managed through the GUI to significantly improve the positioning accuracy.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 4; 789-798
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Renminbi jako waluta międzynarodowa – stan obecny oraz ocena perspektyw
Renminbi as international currency – current state and potential perspectives
Autorzy:
Serwach, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/970378.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
renminbi
światowy system walutowy
waluta międzynarodowa
yuan
CNY
global monetary system
international currency
Opis:
The domination of USD in the contemporary monetary system exposes global economy, and national economies as well, to the risk of external mbalances, asset bubbles or sudden changes in valuation of foreign exchange reserves. In these circumstances one of the most frequently discussed topics is the possibility of achieving by the renminbi (CNY) the status of international currency, which would allow it to substitute USD in global finance. The article presents the importance of CNY in international monetary system and highlights factors which may affect the road of CNY to the mentioned status.
Źródło:
Ekonomia Międzynarodowa; 2013, 004; 39-53
2082-4440
2300-6005
Pojawia się w:
Ekonomia Międzynarodowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GNSS for an Aviation
Autorzy:
Grzegorzewski, M.
Cwiklak, J.
Jafernik, H.
Fellner, A.
Powiązania:
https://bibliotekanauki.pl/articles/117124.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Air Navigation
Aviation, Global Positioning System (GPS)
Aircraft-Based Augmentation System (ABAS)
satellite based augmentation system (SBAS)
Ground-Based Augmentation System (GBAS)
EGNOS
Opis:
In Polish aviation on-board GPS units are used for enroute procedures mainly. The use of GNSS for approach and landing procedures requires overcoming a lot of obstructions, including both organizational and technical ones. The paper presents information connecting with GNSS implementation in aviation.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 345-350
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polish DGPS System: 1995-2018 – studies of reference station operating zones
Autorzy:
Specht, C.
Specht, M.
Dąbrowski, P. S.
Powiązania:
https://bibliotekanauki.pl/articles/117143.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Polish DGPS System
reference station operating zones
history of navigation
Differential GPS (DGPS)
DGPS Reference Station
positioning system
Global Positioning System (GPS)
Opis:
The operating zone of a radio navigation system is one of its main operating features. It determines the size of a water body in which the system can be used, while guaranteeing vessels’ navigation safety. The DGPS system in the LF/MF range is now the basic positioning system in coastal waters around the world, which guarantees not only metre positioning accuracy, but it is also the only one to provide navigators with signals on positioning reliability. This paper describes and summarises over twenty years of studies dealing with the operating zone of the Polish DGPS reference station network. This paper is the fifth in a series of publications whose aim was to present in detail the process of installation, testing and long-term evaluation of the navigational parameters of the Polish DGPS system, launched in 1995. This paper includes the theoretical foundations of determination of the Dziwnów and Rozewie DGPS reference station operating zones in the years 1995-2018. Moreover, it presents the measurement results for the signal levels and the results of their analyses, which determine the station operating zones.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 581-586
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza szeregów czasowych współrzędnych lokalnej stacji referencyjnej KRUR w Krakowie
Analysis of the series of time coordinates of the local KRUR reference station in Krakow
Autorzy:
Siejka, Z.
Powiązania:
https://bibliotekanauki.pl/articles/62458.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
pomiary geodezyjne
pomiary satelitarne
system Global Navigation Satelite System
stacje referencyjne
szeregi czasowe
stacja KRUR Krakow
Opis:
Działanie współczesnej permanentnej stacji referencyjnej GNSS sprowadza się do ciągłego rejestrowania sygnałów satelitarnych z zadanym interwałem pomiarowym, na punkcie o precyzyjnie wyznaczonych współrzędnych. Zarejestrowane obserwacje są kontrolowane a następnie przetwarzane i w kolejnym etapie udostępniane zainteresowanym użytkownikom w postaci różnych serwisów, których podstawowym zadaniem jest wspomaganie pomiarów satelitarnych realizowanych różnymi technikami i wymagającymi różnych dokładności. Stacja permanentna KRUR jest przykładem lokalnej stacji wykonującej obserwacje sygnałów satelitarnych systemów GPS i GLONASS. Została uruchomiona 1 listopada 2009 roku i od tej pory pracuje bez przerwy. Antena odbiorcza (GPS + GLONASS) umieszczona jest na specjalnie wybudowanym do tego celu filarze obserwacyjnym wkomponowanym w budynek pawilonu C Wydziału Inżynierii Środowiska i Geodezji Uniwersytetu Rolniczego w Krakowie. Stacja KRUR wyposażona jest w wieloczęstotliwościowy i wielosystemowy odbiornik sygnałów GPS i GLONASS oraz antenę Zephyr Geodetic 2. Pomiary sygnałów satelitarnych odbywają się z interwałem 1 s. Dzięki takiej ciągłości pomiarów sygnałów satelitarnych możliwe było wyznaczenie szeregów (ciągów) czasowych współrzędnych o rozdzielczości 1 h. Szeregi takie zostały wyznaczone w oparciu o system ASGEUPOS i zawierają one lokalną charakterystykę różnych czynników wpływających na jakość kolejnych rozwiązań. Analiza uzyskanych wyników dostarcza wielu informacji na temat dokładności, niezawodności i efektywności rozwiązań współrzędnych w danych interwałach czasowych.
Operation of the contemporary permanent GNSS reference station boils down to continuous recording of satellite signals with the set measurement interval at the point with precisely determined coordinates. The recorded observations are controlled, next they are processed and, at the next stage, they are made available to the interested users in the form of various services the basic task of which is to support satellite measurements carried out by means of different techniques and requiring various accuracy levels. KRUR permanent station constitutes an example of a local station making observations of GPS and GLONASS systems satellite signals. It started to operate on 1 November 2009 and it has been in continuous operation since then. The receiving antenna (GPS + GLONASS) is placed on an observation pillar built especially for that purpose in Building C at the Faculty of Environmental Engineering and Surveying of Agricultural University in Krakow. KRUR station is equipped with a multi-frequency and multi-system GPS and GLONASS signal receiver and Zephyr Geodetic 2 antenna. Measurements of satellite signals are made every 1 s. Owing to such continuity of satellite signal measurements, it was possible to set time coordinate series (sequences) with the resolution of 1 h. Such series were determined on the basis of the ASG-EUPOS system and they contain local characteristics of various factors affecting the quality of subsequent solutions. The analysis of the acquired results provides a lot of information about the accuracy, reliability and effectiveness of coordinate solutions in given time intervals.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2010, 12
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global container shipping market development and Its impact on mega logistics system
Autorzy:
Grzelakowski, A. S
Powiązania:
https://bibliotekanauki.pl/articles/116325.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
global logistics system
Transport Logistics System (TLS)
global container shipping market
mega logistics system
global container market
container
container logistics
logistics chain
Opis:
The main purpose of the paper is to recognize and characterize the substantial trends and ongoing phenomena as well as processes on the supply and demand side of the global ocean container market and then evaluate their impact on global supply chains and the whole mega logistics system. The author has analysed the dynamics of potential supply and effective demand growth on this market in the recent years and assessed changes observed on both market sides with respect to global logistics area. On this basis, the influence of global container market development on global logistics supply chains has been estimated. There were also presented and analysed the main effects of speeding-up implementation of disruptive innovations such as blockchain technology and digital trade platforms development in maritime container transport and trade sectors on the efficiency and effectiveness of global logistics chains and the whole logistics area. The issues related to the security of smooth digital development of container maritime transport and the mega logistics area were taken into consideration as well.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 529-535
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of satellite techniques in geodesy and navigation in Poland
Autorzy:
Baran, Lubomir W.
Oszczak, Stanisław
Zieliński, Janusz B.
Powiązania:
https://bibliotekanauki.pl/articles/703201.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
geodesy
reference frame
Global Positioning System – GPS
satellite techniques
satellite navigation
Galileo navigation system
Opis:
Contemporary geodesy is of global dimension. The reference frame is defined as the geocentric system with parameters related to the entire Earth body, e.g. the axis of rotation, and global geoid. The unified time scale is determined for the whole Earth territory as well. International services using different satellite techniques are engaged in the determination of this frame. Particularly important is the Global Positioning System GPS, which is the most important geodetic tool nowadays. In Poland a number of geodetic observatories are working in the frame of the international networks, Polish scientific groups contribute to the advancement of science in this domain. For the practical applications we are using the local networks that again are constructed with satellite techniques. In Europe the regional network EUREF exists while its part EUREF-POL and densification POLREF are in Poland. The modern network ASG-EUPOS is under construction. The GPS technique is used for surveying and navigation and for the positioning in motion, which is in-between the preceding traditional methods. Differential augmentation methods are designed to improve GPS signals such as DGPS and EGNOS. The new European satellite navigation system Galileo is in development. Poland is a member and coowner of this system. A number of Polish research institutions are working on new methods of the practical application of GNSS.
Źródło:
Nauka; 2008, 4
1231-8515
Pojawia się w:
Nauka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development and perspectives of the global and European security environment
Autorzy:
Rožňák, Petr
Powiązania:
https://bibliotekanauki.pl/articles/1933818.pdf
Data publikacji:
2020-12-17
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
globalization
COVID-19
global security system
security of the Visegrad Group
security
Opis:
The development of globalization at the beginning of the third decade of the 21st century shows that unpredictable economic factors and new trends have a decisive influence on its course. Examples include continued sustained efforts to change the balance of power, the relativization of the Soviet Union’s share in the defeat of Hitler’s Nazi Great German Empire, the growing influence of the People’s Republic of China and the Russian Federation, turbulent developments in Belarus, as well as the impact of COVID-19 pandemic. Based on these trends, a new global system of international economic, political, social and security relations is being created. The current, dynamically and rapidly changing world brings many positive, but also many negative facts, which are manifested in various areas of human life and society. This is evidenced by the existing and ubiquitous threats and risks that prove it necessary to put security issues first. The author reflects on the current development of the security environment and the degree of threat to the security of the nation states of the Visegrad Group on the threshold of the third decade of the 21st century. The aim is to answer the question: a) Is the security environment changing: a) for better, or b) for worse? The article points out the role of the main security actors and possible changes in the security environment.
Źródło:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje; 2020, 38(38); 111-125
2299-4033
Pojawia się w:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indigenous rights as a field of sociological research
Autorzy:
Thornhill, Chris
Powiązania:
https://bibliotekanauki.pl/articles/48899368.pdf
Data publikacji:
2023-07-10
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
indigenous rights
international law
integration and national citizenship
ethnicity
global legal system
Opis:
This paper sets out a new reconstruction of indigenous rights as a field of sociological research. Questioning the dominant pluralist paradigm in such inquiry, it claims that indigenous rights are primarily the results, not of socially embedded customs, but of interactions between international law and national law. It then proceeds to explain that, to capture such rights, a focus on social integration and national citizenship is required. It uses this framework to explain indigenous rights as elements of a global legal order that facilitates the construction of citizenship, especially in societies in which citizenship has been subject to deep strain.
Źródło:
Studia Iuridica; 2023, 96; 374-404
0137-4346
Pojawia się w:
Studia Iuridica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic system for GPS tropospheric delay estimation, on-line GPS processing user service and analysis of the results
Autorzy:
Kruczyk, M.
Liwosz, T.
Rogowski, J. B.
Powiązania:
https://bibliotekanauki.pl/articles/224483.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
system pozycjonowania obiektów
GPS
geodezja satelitarna
troposfera
Global Positioning System
satellite geodesy
tropospheric delay
Opis:
This paper describes automatic system for GPS tropospheric delay estimation developed at the Institute of Geodesy and Geodetic Astronomy of the Warsaw University (WUT) LAC. The system is based on BPE (Bernese Processing Engine) and utilizes UltraRapid orbits and EUREF weekly coordinates. We describe processing strategies used in this application and report various experiences leading to start of NRT tropospheric service. We have made many statistical quality analysis of the resulting solutions. Accurate comparisons with ZTD combined product (EPN and IGS) and radiosounding data has been made. The poster presents also other research areas on the GPS data processing performed especially the Internet based service for an on-line GPS processing of the users data. Finally we present some other ideas of our interest how to use tropospheric delay in meteorology and climatology.
Źródło:
Reports on Geodesy; 2006, z. 1/76; 139-151
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Positioning Using GPS and GLONASS Systems
Autorzy:
Kujawa, L.
Rogowski, J. B.
Kopańska, K.
Powiązania:
https://bibliotekanauki.pl/articles/116742.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Global Positioning System GPS
GLONASS
Precise Positioning
Positioning Accuracy
Geometric Dilution of Precision (GDOP)
Horizontal Dilution of Precision (HDOP)
DOP Analysis
Opis:
This paper presents an experiment involving the processing of observations using the GPS and GPS/GLONASS systems performed at the BOGO, BOGI, and JOZ2 IGS stations. Due to the small number of GLONASS satellites, the authors failed to receive any significant improvement in positioning accuracy using GPS and GLONASS observations jointly.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 3; 283-286
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of pseudolite observations and EDM survey influence on GPS vector estimation
Autorzy:
Rapiński, J.
Zapert, M.
Powiązania:
https://bibliotekanauki.pl/articles/225060.pdf
Data publikacji:
2007
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
system pozycjonowania obiektów
EDM
pomiary geodezyjne
electronic distance meter
GPS
Global Positioning System
engineering surveying
Źródło:
Reports on Geodesy; 2007, z. 1/82; 287-293
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of traction and dynamic qualities of the electric train with operated pneumatic suspension
Opredelenie tjagovo-dinamicheskikh kachestv ehlektropoezda s upravljaemym pnevmaticheskim ressornym podveshivaniem
Autorzy:
Krasnobryzheva, J.
Powiązania:
https://bibliotekanauki.pl/articles/791842.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
electrical train
pneumatic suspension
control system
sensor
dynamic indicator
servomotor
global positioning system
railway transport
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2013, 13, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new method for localization of wireless sensor networks based on path planning of mobile robots
Autorzy:
Ashoori, E
Babagoli, I
Alipour, S
Powiązania:
https://bibliotekanauki.pl/articles/102577.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
sensor nodes
localization
global positioning system (GPS)
wireless sensor network (WSN)
graph theory
Opis:
With an explosive growth of wireless sensor networks (WSN), many of their features and applications have become important. Localization of sensor nodes is one of the most important problems in WSN whose accuracy has a very large impact on its performance. Global positioning system (GPS) is a well-known and powerful way which differentiates methods of its use on each node individually. But, because of high energy consuming and processing GPS, it is inappropriate for WSNs. Different algorithms are suggested to overcome the consumed cost of GPS by putting GPS on only some nodes instead of all nodes in the network for localization. So, for nodes localization, just a number of nodes exploit GPS and, they can help other nodes of network in localization via distribution of their coordinates. The use of a mobile robot to send signals to coordinate the target node localization is a good idea. The mobile robot should move in the right path and can localize node more accurately at lower cost. This paper proposes a new method to localize all nodes through some localized nodes based on graph theory in a tree and network topology. The proposed method provides better performance at the cost of accuracy and the number of nodes that can be made up of local consumption.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 10-17
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of tropospheric contribution to GPS positioning error during tropospheric cyclone Marcus in 2018
Autorzy:
Sikirica, N.
Horvat, M.
Špoljar, D.
Rumora, I.
Powiązania:
https://bibliotekanauki.pl/articles/116217.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Global Positioning System (GPS)
cyclone Marcus
positioning
Navigation and Timing (PNT)
Port Darwin
NASA Earth Observatory
tropospheric correction
Software-Defined Radio (SDR)
Opis:
GNSS positioning performance assessment is essential for sustainable development of a growing number of GNSS-based technology and socio-economic applications. Case-studies of GNSS positioning performance in critical environments and applications scenarios reveals vulnerabilities of the GNSS Positioning, Navigation, and Timing (PNT) services, and suggest mitigation techniques and GNSS application risk containment. Here we address the case of GPS positioning performance during a devastating tropical cyclone Marcus that hit the greater area of the city of Darwin, Australia in 2018. We identified specific statistical properties of time series of tropospheric contribution to GPS northing, easting, and vertical positioning error that may contribute to understanding of tropospheric effects on GPS positioning performance during a massive weather deterioration in maritime and coastal areas, and analysed their adversarial effects on GNSS-based maritime applications.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 2; 343-348
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An experimental identification of multipath effect in GPS positioning error
Autorzy:
Rumora, I.
Sikirica, N.
Filjar, R.
Powiązania:
https://bibliotekanauki.pl/articles/116056.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Pseudo Random Noise (PRN)
accuracy
GPS positioning errors
multipath effect
Base-band Processing Domain (BPD)
Navigation Processing Domain
Global Positioning System (GPS)
Global Navigation Satellite System (GNSS)
Opis:
The analysis of the GPS multipath effects in maritime environment is constrained with the practice of traditional GPS receiver design, that prevents access to GPS signals in Base-band Processing Domain. Here we propose and validate a simple method for experimental identification of multipath effect in Navigation Processing Domain, based on spectral characterisation of time series of GPS positioning errors.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 29-32
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Control system of pneumatic air-spring suspension on transport
Sistema upravlenija pnevmaticheskim ressornym podveshivaniem na transporte
Autorzy:
Vivdenko, Y.
Krasnobryzheva, J.
Powiązania:
https://bibliotekanauki.pl/articles/792874.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
control system
air-spring suspension
transport
railway transport
algorithm
servomotor
three-stage throttle
global positioning system
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconstruction of geomagnetic event as observed in Northern Adriatic region and Its correlation with GPS single-frequency positioning deviations
Autorzy:
Brčić, D.
Ćelić, J.
Valčić, S.
Powiązania:
https://bibliotekanauki.pl/articles/116009.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
geomagnetic event
Northern Adriatic
Global Positioning System (GPS)
positioning deviations
positioning
Navigation and Timing (PNT)
Total Electron Content (TEC)
Classification and Regression Trees (CART)
Opis:
Space weather effects are generally recognized as causes of degradation of satellite positioning, navigation and timing (PNT) services. We analyze GPS position estimation error during a geomagnetic storm, focusing on manifestations of geomagnetic processes. The position estimation error was analyzed in terms of GPS coordinates’ deviations (latitude, longitude and height) from their reference values. The storm’s impact was studied in the Northern Adriatic region where GPS observables from two Global Navigation Satellite System (GNSS) reference stations were analysed. Geomagnetic indices were elaborated, comprising readings from interplanetary, magnetospheric and geomagnetic observatories. Total Electron Content (TEC) on both stations was computed using dual frequency GPS pseudorange observables. The experiment was to reconstruct the movement of geomagnetic disturbances entering the geospace, reaching the earth’s surface. The aim was to correlate possible space weather manifestation on satellite positioning performance in terms of positioning error. Regularities in changes in positioning deviations were identified with relation to influential indices. The research offered a possibility of experimental positioning deviations assessment as well as forecasting. Evaluation of generated rudimentary Classification and Regression Trees (CART) models showed that the risk of satellite positioning errors could be assessed and predicted considering absolutes, as well as changes in values of geomagnetic indices. During the research process, several activities emerged as preferable continuation of the work, with the aim of further development of predictive models and the complement of space weather scenarios and their consequences on navigational systems. Along with summarized results, they are outlined in the conclusion section.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 2; 349-357
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of 3-D Velocity Measurement of Vessel by VI-GPS for STS Lightering
Autorzy:
Yoo, Y.
Pedersen, E.
Tatsumi, K.
Kouguchi, N.
Arai, Y.
Powiązania:
https://bibliotekanauki.pl/articles/117175.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite System (GNSS)
Global Positioning System GPS
Vessel Velocity
STS Lightering
3D Velocity Measurement
Ship-to-Ship (STS) Operation
Liquefied Natural Gas (LNG)
Kinematic GPS (KGPS)
Opis:
A lightering operation is a type of Ship-To-Ship (STS) operation where two ships are together in open waters and transfer the cargo e.g. crude oil, LNG. High skills and experience are required by the human operators as no relevant equipment for determining the relative speeds and distances with sufficient accuracies has been implemented. The officer in charge of an STS lightering takes the decision on adequate maneuvering orders based on predominantly visual observations during the final approach. Landing on all fenders simultaneously is an objective in order to minimize ship-fender contact forces, but this is rather difficult to achieve in practice even in calm sea due to the effect of hydrodynamic interaction when the ships are closing in. Furthermore, currents that are present in the lightering zone add to the operational complexity. A field measurement experiment has been carried out with a Velocity Information GPS (VI-GPS) system installed onboard a ferry approaching port for berthing which is similar to an STS lightering. The paper proposes to apply VI-GPS as input sensor to a decision-support and guidance system aiming to provide accurate velocity information to the officer in charge of an STS operation. It is argued that DOP of VI-GPS is related to the velocity error.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 43-48
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Covid 19 pandemic – challenges for maritime transport and global logistics supply chains
Autorzy:
Grzelakowski, A. S.
Powiązania:
https://bibliotekanauki.pl/articles/2086302.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
COVID-19
mMaritime transport
Global Logistics System
global supply chain
logistic supply chain
shipping freight market
freight market
Opis:
The outbreak of the Covid 19 pandemic and the actions that all countries took in its aftermath all over the world in the first quarter of 2020 and later, i.e., during lockdowns and other restrictive measures, introducing a short and medium-term freezing of economic activity, had a strong impact on their economies and, consequently, also on the global economy. They hit seriously its particularly sensitive sectors, such as industry, trade and transport. The aim of undertaken research is to evaluate the impact of the pandemic on the functioning of maritime transport sector as well as to indicate its consequences for the global supply chains between 2020 and 2021 (first quarter). The research is mainly focused on assessing the impact of the Covid 19 pandemic on the global shipping and especially container one that is contemporarily the most vital link of the global intermodal land-sea supply chains. The analyses take into account the adaptive measures taken by ship operators and other individual parties being an integral link of the global supply chains with an aim to mitigate the effects of radical slowdown in industrial and global trade activity. The research was based on the analyses, reports and several business information carried out by specialized international organizations as well as ship carriers and logistics providers. The obtained research results indicate the need to reconfigure global logistics supply chains and increase their resilience by introducing new digital solutions. It is high time to introduce new smart, green digital supply chains and subsequently to reconfigure them much more towards the regional trade and economic relations and ties among countries (reshoring). Such activities aiming at rebuilding the logistic supply chains may at the same time change the presently existing business environment in global maritime shipping, enforcing not only changes in ship owners’ business models but also serious structural alterations on the shipping freight markets.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 1; 71--77
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FCM clustering using GPS data for defining level of service criteria of urban streets in indian context
Autorzy:
Bhuyan, P.
Rao, K.
Powiązania:
https://bibliotekanauki.pl/articles/374863.pdf
Data publikacji:
2010
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
klaster
GPS
nawigacja
natężenie ruchu
algorytm Fuzzy C-Means
cluster
Global Positioning System
traffic
Opis:
At present speed ranges for Levels of Service (LOS) categories are not well defined for highly heterogeneous traffic flow on urban streets in Indian context. In this regard a study was carried out in the city of Mumbai in India. The objective of this research work is to define free-flow speed ranges of urban street classes and speed ranges of LOS categories. In this regard speed data were collected using GPS palmtop and Fuzzy C-Means (FCM) clustering is used to define the speed ranges. It is found from this study that speed-ranges for LOS categories in Indian context are lower than that mentioned in Highway Capacity Manual.
Źródło:
Transport Problems; 2010, 5, 4; 105-113
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Effect of Time Delay on the Integrated GNSS/INS Navigation Systems
Autorzy:
Yang, C.K.
Shim, D.S.
Powiązania:
https://bibliotekanauki.pl/articles/115995.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
time delay
inertial navigation system (INS)
Global Navigation Satellite System (GNSS)
computer simulation
Opis:
The performance of tightly coupled GNSS/INS integration is known to be better than that of loosely coupled GNSS/INS integration. However, if the time synchronization error occurs between the GNSS receiver and INS(Inertial Navigation System), the situation reverses. The performance of loosely coupled GNSS/INS integration and tightly coupled GNSS/INS integration is analyzed and compared due to time synchronization error by computer simulation.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 2; 199-204
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 216

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