<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This paper applies time-frequency analysis to a 3-day time series with a sampling interval of 1 second of the changes in E, N and H coordinates of three permanent GNSS stations: WRON, KR10, and KRUR in Krakow, as well as differences between them. Time-frequency analysis was conducted using a Fourier transform band-pass filter, which separates time series into frequency components. By analyzing the differences between these coordinates, it was observed that the WRON station shows a systematic error in the form of a regular wideband oscillation with a period of 75 minutes, whose amplitude varies from approximately 1 to 3 mm with a period of about 1 day. In the horizontal plane, this oscillation takes the shape of a ˚attened ellipse with a semi-major axis oriented in the northwest direction. The most probable cause of this regular oscillation is the day-to-day variability of the multipath signal environment.</p>
</abstract>

This paper applies time-frequency analysis to a 3-day time series with a sampling interval of 1 second of the changes in E, N and H coordinates of three permanent GNSS stations: WRON, KR10, and KRUR in Krakow, as well as differences between them. Time-frequency analysis was conducted using a Fourier transform band-pass filter, which separates time series into frequency components. By analyzing the differences between these coordinates, it was observed that the WRON station shows a systematic error in the form of a regular wideband oscillation with a period of 75 minutes, whose amplitude varies from approximately 1 to 3 mm with a period of about 1 day. In the horizontal plane, this oscillation takes the shape of a ˚attened ellipse with a semi-major axis oriented in the northwest direction. The most probable cause of this regular oscillation is the day-to-day variability of the multipath signal environment.

Time-frequency analysis of differences between coordinates of three permanent GNSS stations in Krakow

Department of Environmental Engineering and Geodesy, Faculty of Production Engineering

Department of Geodesy, Faculty of Environmental Engineering and Land Surveying

Reports on Geodesy and Geoinformatics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

This paper applies time-frequency analysis to a 3-day time series with a sampling interval of 1 second of the changes in E, N and H coordinates of three...

Time-frequency analysis of differences between coordinates of three permanent GNSS stations in Krakow

Published Online: Dec 02, 2023

Page range: 61 - 68

Received: Jul 27, 2023

Accepted: Nov 14, 2023

DOI: https://doi.org/10.2478/rgg-2023-0011

Keywords
GNSS, precise GBAS, multipath environment, Fourier transform filter

© 2023 Wiesław Kosek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Time-frequency analysis of differences between coordinates of three permanent GNSS stations in Krakow

Published Online: Dec 02, 2023

Page range: 61 - 68

Received: Jul 27, 2023

Accepted: Nov 14, 2023

DOI: https://doi.org/10.2478/rgg-2023-0011

KeywordsGNSS, precise GBAS, multipath environment, Fourier transform filter

© 2023 Wiesław Kosek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
GNSS, precise GBAS, multipath environment, Fourier transform filter