[1]LIU Xinzhong,LI Shuanhu,SONG Chengke.Quantitative Study of Coordinate Precision of GPS Continuous Station Influenced by Environmental Changes[J].Journal of Seismological Research,2018,41(03):472-479.
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Quantitative Study of Coordinate Precision of GPS Continuous Station Influenced by Environmental Changes
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 03
Page number:
472-479
Column:
Public date:
2018-08-20
- Title:
- Quantitative Study of Coordinate Precision of GPS Continuous Station Influenced by Environmental Changes
- Keywords:
- CMONOC; GPS; time series; anormaly verification; multipath effect
- CLC:
- P315.725
- DOI:
- -
- Abstract:
- In this paper,we calculated reliable coordinate time series of continues GPS stations of Crust Movement Observation Network Of China(CMONOC)by unified reference frame and data processing scheme since June 2010.And then non-linear and non-periodic abnormal changes from those coordinate time series have been carried out in-depth and detailed field verification and analysis to determine environmental changes and their influences.For the effect on the observation results from trees and other obstructions,we set data screening experiments by artificially set ring angle,shielding part of the satellite signal and other means based on part of existing coordinate time series.The results show that the effect on coordinate time series is that when the ring angle increases,the the precision for vertical direction is worse in contrast to horizontal direction.When the ring angle is increased to 20 degrees,the multi-path effect can be effectively improved which is very favorable for the purification of raw data.When the ring angle is increased to 30 degrees,the accuracy degree of coordinate time series significantly decreased.Shielding part of the satellite signal can improve the accuracy of coordinates to a certain extent,but not suitable when processing large-scale data.However,it is feasible,to a certain extent,to check and correct the data of individual mobile stations within 4 days.
- References:
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- Similar References:
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Last Update:
2018-07-20