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《GNSS World of China》 2013-05
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Step Offset Recovery of GNSS Continuous Station and Its Effect on GNSS Data Processing

FENG Shengtao;ZHENG Zhijiang;First Crust Monitoring and Application Center,CEA;  
There are some step offsets in the time series of GNSS continuous stations due to instrument replacement and strong earthquake's effect in recent years.Those stations can't be chosen as frame stations in theory and it seriously influenced the stability of reference frame and calculation accuracy.In this paper,step offset recovery of GNSS continuous station and its effect on GNSS data processing were analyzed and the results show that:1)if the offset of stations were not recovered and were chosen as frame stations,the result would be distorted;2)the offset can be recovered conveniently in QOCA;3)step offset recovery of GNSS continuous station can maintain the stability of reference frame and improve the calculation precision in some degree.
【Fund】: 地震行业专项(批准号:201308009);; 一测中心预测室基金项目(批准号:201304001)
【CateGory Index】: P228.4
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