卫星钟系统偏差对精密单点定位精度的影响

摘要

从理论上证明了当卫星钟系统性偏差小于2.5×10-7 s时,系统性偏差在单点定位过程中完全被接收机钟差参数吸收,其对精密单点定位解算造成的影响可以忽略.即相对卫星钟差和绝对卫星钟差对于单点定位结果而言是等价的.结合实测数据,分析比对了不同卫星钟系统性偏差对精密单点定位精度的影响,得到了与理论证明相一致的结论.%It is theoretically proved that when the satellite clocks systematic bias is less than 250 ns,systematic bias in the single point positioning process is completely absoluted in receiver clock error parameter.Its impact on single point positioning can be ignored.The influence of the relative clock error on the single point positioning results is equivalent to absoluted clock error.Analyzing the impact of the different satellite clock systemic bias on the precise point positioning results by the measured data,the results which were consistent with the results of theoretical proof were got.