GPS重复基线粗差探测方法比较及实例分析

Comparison of GPS Repeated Baseline Gross Error Detection Methods and Case Analysis

阐述了在传统稳健的基础上,针对GPS重复基线含有粗差时,比较各大选权迭代方法与等价方差-协方差稳健估计方法分别进行粗差探测,并通过VB进行编程及实例分析,论证等价方差-协方差稳健估计方法通过充分合理定权,不断构造严格对称的方差-协方差阵,并对其进行不断扩大,从而能达到对重复基线高效精准的探测。

Based on traditional robust estimation, we compared the iterative methods with the equivalent variance covariance robust estimation method, when the GPS repeated baseline contained gross error. And then, through VB programming and example analysis, it is demonstrated that the equivalent variance covariance robust estimation method continuously constructs the strictly symmetric variance covariance matrix by fully reasonable weight, and expand it continuously, so as to achieve efficient and accurate detection of repeated baseline.