Repozytorium publikacji - Politechnika Gdańska

Mobile Global Navigation Satellite System (GNSS) measurements carried out on the railway consist of using satellite navigation systems to determine the track geometry of a moving railway vehicle on a given route. Their purposes include diagnostics, stocktaking, and design work in railways. The greatest advantage of this method is the ability to perform measurements in a unified and coherent spatial reference system, which effectively enables the combining of design and construction works, as well as their implementation by engineering teams of diverse specialties. In the article, we attempted to assess the impact of using three types of work mode for a GNSS geodetic network [Global Positioning System (GPS), GPS/Global Navigation Satellite System (GLONASS) and GPS/GLONASS/Galileo] on positioning availability at three accuracy levels: 1 cm, 3 cm and 10 cm. This paper presents a mathematical model that enables the calculation of positioning availability at these levels. This model was also applied to the results of the measurement campaign performed by five GNSS geodetic receivers, made by a leading company in the field. Measurements with simultaneous position recording and accuracy assessment were taken separately on the same route for three types of receiver settings: GPS, GPS/GLONASS and GPS/GLONASS/Galileo in an urban area typical of a medium-sized city. The study has shown that applying a two-system solution (GPS/GLONASS) considerably increases the availability of high-precision coordinates compared to a single-system solution (GPS), whereas the measurements with three systems (GPS/GLONASS/Galileo) negligibly increase the availability compared to a two-system solution (GPS/GLONASS).

Autorzy

• dr inż. Mariusz Specht,
• Cezary Specht,
• dr hab. inż. Andrzej Wilk link otwiera się w nowej karcie ,
• prof. dr hab. inż. Władysław Koc link otwiera się w nowej karcie ,
• dr hab. Leszek Smolarek,
• dr hab. inż. Krzysztof Czaplewski,
• dr hab. inż. Krzysztof Karwowski link otwiera się w nowej karcie ,
• Paweł S. Dąbrowski,
• dr hab. inż. Jacek Skibicki link otwiera się w nowej karcie ,
• dr hab. inż. Piotr Chrostowski link otwiera się w nowej karcie ,
• dr inż. Jacek Szmagliński link otwiera się w nowej karcie ,
• dr inż. Sławomir Grulkowski link otwiera się w nowej karcie ,
• dr inż. Sławomir Judek link otwiera się w nowej karcie