Velocity Field Analysis of Satellite Positioning Reference Station Network in Yunnan Province
Based on the GNSS observation data of 99 reference stations in Yunnan Province Continuous Operation Reference Station Net-work system(YNCORS)from 2017 to 2020,using GAMIT/GLOBK software,the coordinate time series of the reference station and velocity fields under different frames are solved.The results show that under the framework of ITRF14 of Yunnan Reference station,the average moving speed in the east direction is 31.84mm/a,and the average moving speed in the south direction is 13.09mm/a.The overall moving direction is in the east-south direction.Under the framework of Eurasian plate as the moving background field,the average moving speed in the east direc-tion was 6.83mm/a,and the average moving speed in the south direction was 3.91mm/a.The movement rate in southwest Yunnan is small and has a tendency of left rotation,while the movement rate in west Yunnan is large and has a tendency of right rotation.
continuous operational reference system(CORS)time seriesnoisethe frameworkvelocity field
NETL
NSTL
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