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    Tytuł:
    Określanie lokalizacji pociągu za pomocą systemów radionawigacyjnych
    Localisation of a train using GNSS systems
    Autorzy:
    Iwański, R.
    Toruń, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/253939.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Naukowo-Wydawniczy TTS
    Tematy:
    Global navigation Satellite Systems
    GNSS
    pociąg
    radionawigacja
    transport kolejowy
    Opis:
    Rozwój usług systemów nawigacji satelitarnej - GNSS (Global Navigation Satellite Systems), zwłaszcza przyszłościowego europejskiego systemu galileo może znacznie przyczynić się do poprawy konkurencyjności i wydajności na wielu liniach kolejowych, zmniejszając koszty utrzymania oraz zachowujęa wymagany poziom bezpieczeństwa. W materiale przedstawiono nowe, obecnie stosowane przez firme Bombardier, koncepcje lokalizacji pociągu w oparciu o GNSS. jako przykład projektu wykorzystującego GNSS do pozycjonowania pociągu został przytoczony projekt INTEGRAIL.
    Źródło:
    TTS Technika Transportu Szynowego; 2006, 9; 37-42
    1232-3829
    2543-5728
    Pojawia się w:
    TTS Technika Transportu Szynowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Global Navigation Satellite Systems Applications in Different Modes of Transport
    Wykorzystanie globalnych nawigacyjnych systemów satelitarnych w różnych gałęziach transportu
    Autorzy:
    Januszewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/134596.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    global satellite navigation systems
    GNSS
    mode of transport
    GNSS market and applications
    globalne nawigacyjne systemy satelitarne
    gałęzie transportu
    rynek i zastosowania GNSS
    Opis:
    Nowadays (July 2016) we can distinguish four modes of transport – air, maritime, rail and road. In each mode the continuous knowledge of the current user’s position is one of the most important parameters of safety and economy of the transport. The information about position can be obtained from satellite navigation systems SNS (GPS, GLONASS) and based augmentation systems SBAS (WAAS, EGNOS, MSAS, GAGAN). Two next global SNSs and one SBAS are under construction. This paper gives the reply to some questions: in which mode these systems are the most frequently used and why, which system is preferred in separate mode and individual region of the world, which kind of the receiver, one or more systems, are most popular. The comparison of SNSs applications, the capability of SNS receivers and supported constellations by theses receivers and additionally the detailed analysis of SNS receiver survey designed for each mode of transport are presented in this paper also.
    Obecnie (lipiec 2016) można wyróżnić cztery gałęzie transportu – drogowy, kolejowy, morski i lotniczy. W każdej z nich nieprzerwana znajomość bieżącej pozycji użytkownika jest jednym z najważniejszych czynników decydujących o bezpieczeństwie i ekonomii transportu. Informację o pozycji mogą zapewnić satelitarne systemy nawigacyjne SSN (GPS, GLONASS) i systemy wspomagające SBAS (WAAS, EGNOS, MSAS, GAGAN). Dwa kolejne globalne SSN i jeden SBAS są w trakcie budowy. W artykule udzielono odpowiedzi na kilka pytań: w jakiej gałęzi transportu w/w systemy są najczęściej stosowane i dlaczego oraz który system jest preferowany w poszczególnych gałęziach i rejonach świata. Dla każdej z czterech gałęzi porównano także zastosowania GNSS, możliwości odbiorników GNSS i wykorzystywanie przez nich satelitów różnych systemów, a dodatkowo przedstawiono wyniki analizy porównawczej odbiorników GNSS przeznaczonych dla poszczególnych gałęzi transportu.
    Źródło:
    Problemy Transportu i Logistyki; 2016, 34, 2; 117-125
    1644-275X
    2353-3005
    Pojawia się w:
    Problemy Transportu i Logistyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Attempt to Use Google Earth Pro Images for Selected Geodetic Works − for Example of Wolności Square in Poznań (Poland)
    Autorzy:
    Kubiak, Jarosław
    Magda, Paulina
    Powiązania:
    https://bibliotekanauki.pl/articles/43347428.pdf
    Data publikacji:
    2020-12-15
    Wydawca:
    Poznańskie Towarzystwo Przyjaciół Nauk
    Tematy:
    Global Navigation Satellite Systems
    Google Earth Pro maps
    Topographic Objects Database
    topographic descriptions
    satellite measurement
    Opis:
    The article concerns issues pertaining to satellite geodesy and the possibilities of using the available source materials such as high-resolution satellite maps for selected works which require a high degree of accuracy in determining the location of topographic objects. The purpose of the work was to indicate the potential use of Google Earth maps for selected geodetic works (preparing topographic descriptions, sketch maps) in order to facilitate and accelerate the process. Works were carried out in an urban area, Wolności Square in Poznań (Poland) where 58 checkpoints were located. In order to design them, maps from the Google system from four periods were used. The research used the Global Navigation Satellite Systems set consisting of a Leica GS08 + satellite receiver and a Leica CS15 controller, geodetic software for work design (Trimble GNSS Planning Online) and calculations (C-Geo 8) as well as cartographic materials and data obtained from the Municipal Center of Geodetic and Cartographic Documentation in Poznań: the master map, catalog data and topographic descriptions of the reference points. The results show that the accuracy of the location of points offered by Google is greater than declared by the system operators. However, it is not sufficient for applications in the assumed geodetic works.
    Źródło:
    Badania Fizjograficzne Seria A - Geografia Fizyczna; 2020, 11 (71); 65-74
    2081-6014
    Pojawia się w:
    Badania Fizjograficzne Seria A - Geografia Fizyczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Positioning Functionality in ASG EUPOS for Hydrography and Off-Shore Navigation
    Autorzy:
    Rogowski, J.
    Specht, C.
    Weintrit, A.
    Leszczyński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/116967.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite Systems (GNSS)
    geodesy
    ASG-EUPOS
    Gulf of Gdansk
    hydrography
    offshore navigation
    Positioning Functionality
    Opis:
    The paper discusses the ASG EUPOS services. There is presented an assessment of the possibility of using this system selected sites in hydrography and off-shore navigation tasks. Presented and analyzed the experiments were carried out in the port of Gdynia and on the Gulf of Gda?sk. The results obtaining in the work confirm the possibility of the position accuracy guaranteed by ASG EUPOS services. The obtained accuracy greatly exceeds the needs and requirements of coastal navigation and underwater mining and exploration of sea bottom.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 2; 221-227
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance of a novel Receiver Autonomous Integrity Monitoring procedure consistent with IMO requirements
    Autorzy:
    Mink, M.
    Heck, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/134914.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    Global Navigation Satellite Systems
    integrity
    Receiver Autonomous Integrity Monitoring
    maritime
    International Maritime Organization
    protection level
    Opis:
    Although integrity concepts for Global Navigation Satellite Systems (GNSS) are ubiquitous in the aviation community, integrity algorithms of comparable maturity have not yet been developed for maritime users. The International Maritime Organization (IMO) specifies requirements different from those specified by the International Civil Aviation Organization (ICAO). These different requirements affect the design of the integrity algorithms with respect to integrity risk allocation and threat space. This paper describes a novel integrity algorithm based on conditions valid for maritime users. The performance of the novel integrity algorithm has been assessed and compared to a conventional Receiver Autonomous Integrity Monitoring (RAIM) approach consistent with IMO requirements.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 155-161
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evolution of SBAS/EGNOS enabled devices in maritime
    Autorzy:
    López, M.
    Antón, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2063971.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    EGNOS
    navigation and timing
    Global Navigation Satellite Systems
    satellite-based augmentation systems
    dynamic positioning
    Portable Pilot Unit
    Automatic Identification System
    advanced maritime technologies
    Opis:
    The maritime sector was one of the first communities that recognized and exploited the opportunities and advantages provided by Global Navigation Satellite Systems (GNSS). In fact, GNSS have become the primary means of obtaining Position, Navigation and Timing (PNT) information at sea. Most of the ships in the world are equipped with GNSS receivers. GPS provides the fastest and most accurate method for mariners to navigate, measure speed, and determine location. However, its performance can be enhanced by taking advantage of augmentation systems such as differential GNSS or Satellite-Based Augmentation Systems (SBAS/EGNOS), especially in terms of accuracy. Direct access to EGNOS in vessels can be achieved through EGNOS-enabled navigation receivers and EGNOS-enabled AIS transponders. This paper provides an analysis of the number of onboard devices, mainly devoted to navigation purposes, and AIS transponders which are SBAS compatible. In addition, other equipment using GNSS positioning in the maritime and inland waterways domains are also considered for the analysis of SBAS compatibility, including inland AIS, Portable Pilot Units (PPUs) and Dynamic Positioning (DP) equipment. A first survey was done in 2017 to have an overview of the percentage of SBAS enabled devices available in the maritime market [8]. Since then, the analysis has been yearly updated to understand the market evolution in terms of SBAS compatibility and its main results are summarised in this paper.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 543--549
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    R-Mode receiver development for medium frequency signals
    Autorzy:
    Grundhöfer, L.
    Gewies, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/134934.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    Global Navigation Satellite Systems
    GNSS
    GPS
    R-mode technology
    R-mode receiver
    LORAN-C
    maritime radio beacons
    Opis:
    Signals from Global Navigation Satellite Systems are the primary source for Position, Navigation and Time (PNT) information onboard any vessel today. As these signals are prone to interference, a maritime backup system is needed to provide reliable PNT data, R(anging)-Mode is such a system. It utilizes existing maritime radio beacons or base stations of the Automatic Identification System (AIS) by adding ranging components to the legacy signals. The first modified radio beacons transmit medium frequency (MF) R-Mode signals in northern Germany. This paper has described the current state of the authors’ research and development activities at the receiver level for MF R-Mode signals. The receiver platform has been introduced, which was based on off-theshelf components and the implemented algorithms for distance estimation have been explained. Furthermore, the results of the first ranging measurements have been presented, which have shown the general suitability of the R-Mode technology as a source for maritime positioning and timing data.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 56 (128); 57-62
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of Slant Tropospheric Delays from GNSS Observations with Using Precise Point Positioning Method
    Autorzy:
    Savchuk, S.
    Khoptar, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/320603.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    Global Navigation Satellite Systems (GNSS)
    atmosphere monitoring
    precise point positioning method (PPP)
    zenith tropospheric delay
    slant tropospheric delay
    Opis:
    Global Navigation Satellite Systems give opportunities for atmospheric parameters analysis in behalf of solving many atmosphere monitoring tasks. The authors of this article demonstrated possibility of slant tropospheric delays determination with using precise point positioning method – PPP. The atmospheric parameters, retrieved from GNSS observations, including zenith tropospheric delays, horizontal gradients, and slant tropospheric delays, are analyzed and evaluated. It was obtained slant tropospheric delays, along the satellite path, for each satellite, at a certain elevation angle and azimuth, at each time, instead of obtaining a single zenith tropospheric delay composed of all visible satellites at one time. The results obtained proved that suggested method was correct.
    Globalne systemy nawigacji satelitarnej ‒ GNSS ‒ dają możliwości analizy parametrów atmosferycznych do rozwiązywania wielu zadań związanych z monitorowaniem atmosfery. Autorzy tego artykułu zademonstrowali możliwość estymacji opóźnienia troposferycznego w kierunku do satelity za pomocą metody absolutnego precyzyjnego pozycjonowania ‒ PPP. Parametry atmosferyczne, uzyskane z obserwacji GNSS, w tym opóźnienie troposferyczne w kierunku zenitu, gradienty poziomy i opóźnienie troposferyczne w kierunku do satelity są analizowane i oceniane. Otrzymaliśmy opóźnienia troposferyczne w kierunku do satelity dla każdego satelity pod pewnymi kątami wzniesienia i azymutu w każdej chwili, zamiast uzyskać pojedyncze opóźnienie troposferyczne w kierunku zenitu złożone z wszystkich widzialnych satelitów naraz. Uzyskane wyniki wykazały, że sugerowana metoda była prawidłowa.
    Źródło:
    Annual of Navigation; 2018, 25; 253-266
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Global Positioning System: Political Support, Directions of Development, and Expectations
    Autorzy:
    Czaplewski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/116087.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite Systems (GNSS)
    Selective Availability
    Global Positioning System GPS
    Political Support
    Positioning
    Navigation and Timing (PNT)
    GPS management
    GPS modernization
    PNT Advisory Board
    Opis:
    Over the last decade the Global Positioning System has become a global, multifunctional tool which provides services that are an integral part of U.S. national security as well as the security of other highly developed countries. Economic development, transport security as well as homeland security are important elements of the global economic infrastructure. In 2000 the United States acknowledged the growing significance of GPS for civilian users and stopped intentionally degrading accuracy for non-military signals that are known as “Selective Availability”. Since then, commercial applications of satellite systems have been proliferating even more rapidly, and therefore, their importance in everyday life has greatly increased. Currently, services that depend on information obtained from the Global Positioning System are the driving force behind economic growth, economic development and the improvement in life safety. This economic development would not be possible without the financial and political support of the US government to maintain the operation of the GPS system. Therefore it is important to have knowledge about the intentions of the US government how system GPS will be developed in the future. Decisions taken in the last 3 months are the subject of this article.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 2; 229-232
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Teaching Celestial Navigation in the Age of GNSS
    Autorzy:
    Ibáñez, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/117421.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    celestial navigation
    age of GNSS
    astronavigation
    teaching celestial navigation
    Maritime Education and Training (MET)
    MET System in Spain
    STCW
    Global Navigation Satellite Systems (GNSS)
    Opis:
    Over the past two decades, we have witnessed the astounding development of Global Navigation Satellite Systems (GNSS). Celestial navigation has gradually been declining, displaced by the availability of these new, accurate, and easy-to-use electronic systems. Nonetheless, according to the International Convention on Standards of Training, Certification and Watchkeeping (STCW), deck officers onboard merchant ships must have been trained in the observance of celestial bodies to plot the ship’s position and to calibrate compass error. It is a real challenge in the current context to which lecturers in nautical astronomy can respond through innovation in their teaching methods. A new approach to training students in celestial navigation at the Nautical College of the University of the Basque Country is discussed in this paper. It has already achieved promising results in comparison with the traditional teaching methodology, and is both efficient and effective. The adoption of institutional measures is also proposed to ensure that the competence acquired in the training phase is at all times present throughout professional practice.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 3; 573-584
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sources of error in satellite navigation positioning
    Autorzy:
    Januszewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/116711.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite Systems (GNSS)
    satellite navigation positioning
    source of errors
    satellite navigation
    Dilution of Precision (DOP)
    User Equivalent Range Error (UERE)
    User Range Error (URE)
    User Equipment Error (UEE)
    Opis:
    An uninterrupted information about the user’s position can be obtained generally from satellite navigation system (SNS). At the time of this writing (January 2017) currently two global SNSs, GPS and GLONASS, are fully operational, two next, also global, Galileo and BeiDou are under construction. In each SNS the accuracy of the user’s position is affected by the three main factors: accuracy of each satellite position, accuracy of pseudorange measurement and satellite geometry. The user’s position error is a function of both the pseudorange error called UERE (User Equivalent Range Error) and user/satellite geometry expressed by right Dilution Of Precision (DOP) coefficient. This error is decomposed into two types of errors: the signal in space ranging error called URE (User Range Error) and the user equipment error UEE. The detailed analyses of URE, UEE, UERE and DOP coefficients, and the changes of DOP coefficients in different days are presented in this paper.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 3; 419-423
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of precise point positioning algorithm to support advanced driver assistant functions for inland vessel navigation
    Autorzy:
    Lass, C.
    Ziebold, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2063986.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    real tme kinematic
    Global Navigation Satellite Systems
    state space representation
    VHF Data Exchange System
    precise point positioning
    navigation and timing
    Automatic Identification System
    inland navigation
    Opis:
    Bridge passing and passing waterway locks are two of the most challenging phases for inland vessel navigation. In order to be able to automate these critical phases very precise and reliable position, navigation and timing (PNT) information are required. Here, the application of code-based positioning using signals of Global Navigation Satellite Systems (GNSS) is not sufficient anymore and phase-based positioning needs to be applied. Due to the larger coverage area and the reduction of the amount of correction data Precise Point Positioning (PPP) has significant advantages compared to the established Real Time Kinematic (RTK) positioning. PPP is seen as the key enabler for highly automatic driving for both road and inland waterway transport. This paper gives an overview of the current status of the developments of the PPP algorithm, which should finally be applied in advanced driver assistant functions. For the final application State Space Representation (SSR) correction data from SAPOS (Satellitenpositionierungsdienst der deutschen Landesvermessung) will be used, which will be transmitted over VDES (VHF Data Exchange System), the next generation AIS.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 781--789
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    G4 Multi-constellation Precise Point Positioning service for high accuracy offshore navigation
    Autorzy:
    Tegedor, J.
    Ørpen, O.
    Melgård, T.
    Łapucha, D.
    Visser, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/115985.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Global Navigation Satellite Systems (GNSS)
    high accuracy offshore navigation
    Precise Point Positioning (PPP)
    Integer-Ambiguity Resolution (IAR)
    G4 system architecture
    Multi-constellation Precise Point Positioning Service
    offshore navigation
    positioning accuracy
    Opis:
    Fugro is operating a global GNSS infrastructure for the delivery of high-accuracy multi-constellation Precise Point Positioning (PPP) service, named G4. Precise orbit and clock for all global satellite navigation systems are estimated in real-time and broadcast to the users using geostationary satellites. End-users with a G4-enabled receiver are able to obtain sub-decimeter positioning accuracy in real-time. The system has been tailored for offshore applications where a nearby GNSS station is not always readily available. G4 offers seamless integration of GPS, GLONASS, Galileo and BeiDou in the navigation solution, therefore allowing the user to obtain a reliable and accurate position even in challenging environments, especially in presence of interference, scintillation or partial sky visibility. In addition, carrier-phase integer-ambiguity resolution (IAR) is supported, for those users requiring the highest possible navigation accuracy. This paper presents the G4 system architecture and current performance. The benefits of multi-constellation Precise Point Positioning (PPP) are shown in terms of increased availability, robustness and accuracy.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 3; 425-429
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    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:
    Signal Research for Alternative Baltic Navigation System
    Autorzy:
    Dziewicki, M.
    Młotkowski, J.
    Stupak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1841574.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    navigation systems
    Baltic Navigation System
    Global Navigation Satellite System (GNSS)
    IALA recommendations
    Horizontal Dilution of Precision
    Real Time Kinematic (RTK)
    Opis:
    In the project R-Mode a navigation system for Baltic Sea is designed. In the range of these actions in summer of 2020 the signal for DGPS base station Rozewie were adopted and measurements on the sea were performer. This experiment is shown in the article.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 4; 799-802
    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 Russian ALFA System in the Context of the Development of Radionavigation in the 21st Century
    Autorzy:
    Felski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2063950.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    navigational systems
    radionavigation
    ALFA system
    marine navigation
    ground-based radionavigation system
    ground-based augmentation system
    Global Navigation Satellite System
    21st century challenges
    Opis:
    For nearly the entire post-World War II period, naval and air navigation relied primarily on ground-based radionavigation systems. However, the spontaneous development of satellite systems gradually led to their disappearance. They are currently used partly in air operations and marginally in maritime navigation in some areas around Asia, in Russia and in the Middle East. However, at the beginning of the 21st century, the threat of effective interference with satellite systems began to be raised, which led to an increased interest in restoring or upgrading ground-based systems as backup systems in the Western world. In this context, the approach of Russia is interesting, as it is associated with the vast majority of deliberate GPS interference. There are reports in the world literature that various ground-based radionavigation systems operating in Russia are still observed. The article analyses, on the basis of the few available sources, information on the ALFA system, about which the least is known, and there are many indications that it is ready for use.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 723--728
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accuracy Evaluation of Real-Time GNSS Precision Positioning with RTX Trimble Technology
    Ocena dokładności precyzyjnego pozycjonowania GNSS w czasie rzeczywistym z wykorzystaniem technologii RTX Trimble
    Autorzy:
    Ochałek, A.
    Niewiem, W.
    Puniach, E.
    Ćwiąkała, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/395769.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    Global Navigation Satellite System
    data processing
    statistical analysis
    real-time systems
    GNSS
    przetwarzanie danych
    analiza statystyczna
    systemy czasu rzeczywistego
    Opis:
    In this paper, authors present results of accuracy verification of the Trimble RTX technology. The GNSS receiver Spectra Precision SP60 was used in Cyprus (Kato Paphos Archaeological Park). To evaluate the accuracy of the receiver, two measuring test networks (consisting of 30 and 55 control points) were established. All points were determined in four measuring cycles. Additionally, in order to make more advanced analysis of the data, the bases were also measured by using another GNSS receiver - Geomax-Zenith 25. The point positions, in this case, were conducted in the local coordinate system of Kato Paphos Archaeological Park by using RTK positioning technology. To make a comparison, it was necessary to transform the coordinates based on different groups of fitting points. Analysis allowed to conclude that the Spectra Precision SP60 receiver and the RTX Trimble technology guarantee repeatable results (on the level of 4 cm) of point positioning measurements.
    W artykule autorzy przedstawiają wyniki analizy dokładności technologii Trimble RTX. Odbiornik GNSS Spectra Precision SP60 wykorzystano podczas badań na Cyprze (Park Archeologiczny Kato Pafos). Aby ocenić dokładność odbiornika, ustalono dwie bazy testowe (składające się z 30 i 55 punktów kontrolnych). Wszystkie punkty zostały określone w czterech cyklach pomiarowych. Dodatkowo, w celu bardziej zaawansowanej analizy danych, pomiary zostały również wykonane przy użyciu innego odbiornika GNSS - Geomax-Zenith 25. Pozycjonowanie w tym przypadku, zostało przeprowadzone w lokalnym układzie współrzędnych parku archeologicznego Kato Pafos z wykorzystaniem technologii pozycjonowania RTK. W celu porównania wyników badań konieczne było przetransformowanie współrzędnych do jednego układu. Transformację wykonano na podstawie różnych grup punktów dostosowania. Analiza otrzymanych wyników pozwoliła stwierdzić, że odbiornik Spectra Precision SP60 i technologia RTX Trimble gwarantują porównywalne wyniki pozycjonowania (na poziomie 4 cm).
    Źródło:
    Civil and Environmental Engineering Reports; 2018, No. 28(4); 49-61
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodical fundamentals of creation of permanent GPS networks
    Autorzy:
    Uchytel, I. L.
    Jaroshenko, V. N.
    Kapochkin, B. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/224403.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    systemy nawigacyjne
    geodezja satelitarna
    nawigacja satelitarna
    GPS
    system pozycjonowania obiektów
    pozycjonowanie satelitarne
    sieć geodezyjna
    navigational systems
    satellite geodesy
    satellite navigation
    Global Positioning System
    satellite positioning
    geodetic network
    Źródło:
    Reports on Geodesy; 2006, z. 1/76; 293-300
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The geometrical factors of a navigational systems
    Autorzy:
    Banachowicz, A.
    Banachowicz, G.
    Wolski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/224416.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    systemy nawigacyjne
    pozycjonowanie satelitarne
    GPS
    system pozycjonowania obiektów
    DGPS
    nawigajca morska
    navigational systems
    satellite positioning
    Global Positioning System
    maritime navigation
    Opis:
    Vessels engaged in coastal navigation must have their position determined with high accuracy. This can be ensured only by satellite systems such as GPS and GLONASS. The paper presents generalized concepts of geometrical factors of a navigational system. Such factors are used in the analysis of the accuracy of various radionavigational systems aimed at selecting the best system for a given area. The modern process of navigation is described in a four-dimensional space - three geometric dimensions and time. For this reason both the description and analysis of navigational systems should be performed in the same space. The traditional geometric factor of the land-based radionavigational system was generalised to include the factors GDOP, PDOP, HDOP, VDOP and TDOP for the needs of the accuracy analysis of a GPS system. These terms are related to the so-called geometry of navigational system - through mutually related positions of gradients of navigational functions determining position Iines (hyperplanes). They are connected with non-Iinear regression through a probabilistic relation between the measured navigational parameters. Consequently, the concept of geometric factors in the process of navigational parameters estimation can be also extended to include a larger number of dimensions appropriate for the state vector.
    Źródło:
    Reports on Geodesy; 2006, z. 1/76; 261-267
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of flying objects position
    Autorzy:
    Dzunda, M.
    Dzurovcin, P.
    Melniková, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/116434.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Electronic Chart Systems
    flying objects (FO)
    flying objects position
    Matlab
    non-flying objects
    positioning
    Global Navigation Satellite System (GNSS)
    dilution of precision (DOP)
    Opis:
    This paper describes various methods of flying object positioning with the emphasis on their accuracy. Based on the accomplished analysis, we will select the most appropriate method to determine the position of a flying object for relative navigation purposes. The primary criterion for choosing a positioning method is the accuracy of distance measurement within users working in the aviation communications network. The results presented in the paper have been based on mathematical modelling and computer simulation performed in the Matlab programming environment. The results obtained can be used to navigate flying or non-flying objects that work in the air communications network.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 2; 423-428
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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