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

Abstrakt

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 flattened 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.

Autorzy

Zbigniew Siejka
Zbigniew Siejka
artykuł
Reports on Geodesy and Geoinformatics
Angielski
2023
116
61-68
otwarte czasopismo
CC BY-NC-ND Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 4.0
ostateczna wersja opublikowana
w momencie opublikowania
2023-11-30
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