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Analysis of positioning methods using Global Navigation Satellite Systems (GNSS) in Polish State Railways (PKP)

Specht Mariusz, Szmagliński Jacek, Specht Cezary, Koc Władysław, Wilk Andrzej, Czaplewski Krzysztof, Karwowski Krzysztof, Dąbrowski Paweł S., Chrostowski Piotr, Grulkowski Sławomir

Zeszyty Naukowe Akademii Morskiej w Szczecinie

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2020

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nr 62 (134)

26--35

EN

Each year, global navigation satellite systems (GNSS) improve their accuracy, availability, continuity, integrity, and reliability. Due to these continual improvements, the systems are increasingly used in various modes of transport, including rail transport, the subject of this publication. GNSS are used for rail passenger information, rail traffic management, and rail traffic control. These applications differ in the positioning requirements that satellite navigation systems must meet. This article presents the methods and systems of rolling stock location and tracking using the Polish State Railways (PKP) as an example. The information on the equipment used for train positioning is not specified anywhere, hence they may differ, even for the same multiple units travelling in different parts of the country. In addition, the publication presents the progress of the European Train Control System (ETCS) implementation by the PKP.

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Przetwarzanie sygnałów systemu galileo w odbiorniku radia programowalnego SDR

Kowalik R., Bieńczak R., Komorek A.

Autobusy : technika, eksploatacja, systemy transportowe

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2016

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R. 17, nr 12

1069--1074

PL

W artykule przedstawiono analizę przetwarzania sygnałów systemu Galileo w odbiorniku radia programowalnego SDR. W tym celu na wstępie omówiono model matematyczny wszystkich sygnałów SIS wykorzystywanych przez system Galileo. W dalszej kolejności omówiono koncepcję ogólną odbiornika SDR z głównym naciskiem na przedstawienie modułu radiowego front-end. Ponad zaprezentowane wybrane symulacje przetwarzania sygnałów SIS. Na samym końcu zaprezentowano wnioski.

EN

The article presents an analysis of signal processing system Galileo receiver radio programmable SDR. For this purpose, first of all we describe the mathematical model all the signals of the SIS used in the Galileo system. Subsequently, we discussed the concept of a general SDR receiver with the main emphasis on the performance of the receiver front-end. More than presents selected simulation signal processing SIS. At the end of the conclusions presented.

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Korean WA-DGNSS User Segment Software Design

Shah S. T., Choi W.S., Han W.Y., Yun H., Kee C.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2013

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Vol. 7, no. 1

69--74

EN

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.

4

Zintegrowany system korekcji nawigacyjnej radaru SAR dla miniaturowego bezzałogowego statku powietrznego

Kaniewski P., Konatowski S.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 9

94-98

PL

Przedmiotem artykułu jest opis problemu korekcji nawigacyjnej radaru SAR operującego z pokładu miniaturowego bezzałogowego statku powietrznego (mini BSP) oraz przedstawienie możliwych rozwiązań systemu korekcyjnego. Jest to jedno z kluczowych zagadnień, rozwiązywanych przez konsorcjum złożone z Wojskowej Akademii Technicznej oraz WB Electronics S.A., realizujące projekt badawczy oznaczony akronimem WATSAR, którego celem jest opracowanie, wykonanie i zbadanie demonstratora technologii radarowego systemu zobrazowania terenu.

EN

The paper presents the problem of motion compensation (MOCO) of SAR radar operating aboard miniature unmanned aerial vehicles (UAV) and its possible solutions. This is one of key problems to be solved by a Consortium composed of the Military University of Technology and WB Electronics S.A., realizing a grant under acronym WATSAR. The aim of the project consists in designing, manufacturing and testing a demonstrator of a radar terrain observation system.

5

Multipurpose Remotely Piloted Aircraft System Integrated Navigation System Development and Testing

Petrovich-Kharchenko V., Ilnytska S.

Logistics and Transport

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2013

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Vol. 19, No. 3

85--90

EN

The paper presents development of prototype of integrated inertial-satellite navigation system that contains 3-axis accelerometers, gyros, magnetometers, barometric altimeter and GNSS (Global Navigation Satellite System) receiver. Navigation system testing procedure by means of flight at airdrome at small remotely piloted aircraft system (RPAS) is described, and data processing details with results are submitted. These results received from the data post-processing had approved the efficiency of integrated navigation system functioning in normal navigation mode, i.e. during availability of GNSS measurements. It has been shown as well that after approximately 10 s of autonomous MEMS inertial navigation system (INS) functioning accuracy of velocity and position calculation degrades significantly.

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Application of global navigation satellite system and hydroacoustic techniques to safety of inland water navigation

Popielarczyk D.

Archives of Transport

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2011

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Vol. 23, iss. 2

191-190

EN

The paper presents description of application of integrated, Global Navigation Satellite System (GNSS) and hydroacoustic technologies, for elaboration of actual bathymetric chart and creation of an Inland Interactive Underwater Objects Base (IIUOD). In the paper the description of some integrated bathymetric experiments conducted on Great Mazurian Lakes is presented. A small area of Lake Sniardwy, the largest lake in Poland, has been measured using modern technology with precise satellite positioning and hydrographic techniques. The idea and first results of the implemented base is analyzed and described. The database (IIUOD) is created for visualization of dangerous underwater objects and finally for safety of inland water navigation.

PL

Artykuł przedstawia zastosowanie zintegrowanych technik satelitarnego pozycjonowania GNSS i systemu hydroakustycznego do opracowania aktualnych map batymetrycznych oraz utworzenia Interaktywnej Bazy Śródlądowych Przeszkód Podwodnych w celu zapewnienia bezpieczeństwa żeglugi na Szlaku Wielkich Jezior Mazurskich. W artykule opisano eksperymentalne prace pomiarowe wykonane na jeziorze Śniardwy z zastosowaniem satelitarnego pozycjonowania DGPS/EGNOS oraz systemu hydrograficznego. Przedstawiono także koncepcję oraz wyniki utworzenia eksperymentalnej bazy geodanych o przeszkodach podwodnych. Opracowana baza IBŚPP umożliwia wizualizację kształtu dna oraz przeszkód. Pomaga poprawić bezpieczeństwo żeglugi śródlądowej i uprawiania sportów wodnych na Wielkich Jeziorach Mazurskich.