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http://dx.doi.org/10.11003/JPNT.2021.10.1.29

Atmospheric Pressure Loading Effects on Multi-GNSS Kinematic PPP  

Choi, Byung-Kyu (Space Science Division, Korea Astronomy and Space Science Institute)
Lee, Sang Jeong (Department of Electronics Engineering, Chungnam National University)
Publication Information
Journal of Positioning, Navigation, and Timing / v.10, no.1, 2021 , pp. 29-34 More about this Journal
Abstract
Recently, many studies have considered the effect of atmospheric pressure loading (APL) on precise global navigation satellite system (GNSS) data processing. The APL deforms the Earth's crust. It can often exceed 10 mm in radial displacement. In this study, we analyze the APL effect on Multi-GNSS kinematic precise point positioning (PPP). In addition, observations received at two GNSS reference stations (DAEJ and SUWN) in South Korea were processed. The absolute position changes for the two stations were compared to before and after applying the APL effects from January 1 to February 29, 2020. The crust of South Korea was most affected by the APL in the up direction. With the APL model, the difference in daily position changes was mostly within 4 mm in the radial direction. On the other hand, the horizontal components (east-west and north-south) were relatively less affected than the radial component.
Keywords
atmospheric pressure loading; Multi-GNSS; PPP; radial component;
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