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

IF 0.3 Q4 REMOTE SENSING
Wiesław Kosek, Zbigniew Siejka
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引用次数: 0

Abstract

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.
克拉科夫三个永久性全球导航卫星系统台站坐标差异的时频分析
摘要本文采用时频分析的方法,对克拉科夫三个永久GNSS站WRON、KR10和KRUR的3天时间序列进行采样间隔为1秒的E、N和H坐标变化及其差异进行分析。采用傅里叶变换带通滤波器进行时频分析,将时间序列分解为频率分量。通过对这些坐标之间的差异进行分析,发现WRON站的系统误差表现为周期为75分钟的规则宽带振荡,其振幅变化约为1 ~ 3mm,周期约为1天。在水平面上,振荡呈一个半长轴向西北方向的椭球形。这种规律振荡最可能的原因是多径信号环境的逐日变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
自引率
28.60%
发文量
5
审稿时长
12 weeks
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