Analysis of the Impact of Multipath on Galileo System Measurements

Multipath is one of the major source of errors in precise Global Navigation Satellite System positioning. With the emergence of new navigation systems, such as Galileo, upgraded signals are progressively being used and are expected to provide greater resistance to the effects of multipath compared t...

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Bibliographic Details
Published inRemote sensing (Basel, Switzerland) Vol. 13; no. 12; p. 2295
Main Authors Prochniewicz, Dominik, Grzymala, Maciej
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2021
Subjects
Accuracy
Antennas
Code-Minus-Carrier combination
Error analysis
Galileo satellite system (Europe)
Galileo system
Global navigation satellite system
Global positioning systems
GNSS
GPS
Impact analysis
Methods
multipath
Navigation systems
Noise
Receivers & amplifiers
Remote sensing
Satellites
Signal quality
time-frequency analysis
Wavelet transforms
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Summary:Multipath is one of the major source of errors in precise Global Navigation Satellite System positioning. With the emergence of new navigation systems, such as Galileo, upgraded signals are progressively being used and are expected to provide greater resistance to the effects of multipath compared to legacy Global Positioning System (GPS) signals. The high quality of Galileo observations along with recent development of the Galileo space segment can therefore offer significant advantages to Galileo users in terms of the accuracy and reliability of positioning. The aim of this paper is to verify this hypothesis. The multipath impact was determined both for code and phase measurements as well as for positioning results. The code multipath error was determined using the Code-Minus-Carrier combination. The influence of multipath on phase observations and positioning error was determined using measurements on a very short baseline. In addition, the multipath was classified into two different types: specular and diffuse, using wavelet transform. The results confirm that the Galileo code observations are more resistant to the multipath effect than GPS observations. Among all of the observations examined, the lowest values of code multipath errors were recorded for the Galileo E5 signal. However, no advantage of Galileo over GPS was observed for phase observations and for the analysis of positioning results.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs13122295