利用残差统计检验评估区域GPS大地测量网解算方案

采用美国喷气推进实验室JPL发展的GIPSY软件解算区域GPS网，比较了固家精密星历和同时固定精密星历及卫星钟参数2种解算方案，残差统计检验表明前者的左中仍保留了部分未解出的信号而后者的残差接近于白噪声高斯分布，解算结果与ITRF96的比较和对重复率的统计表明，残差分布合理的解算较优，简单的线差统计检验的计算可提供重要的解算评估。

The Assessment of Strategies for Regional GPS Network Analysis with the Statistical Tests of the Post-fit Residuals

Based on the GIPSY, a GPS data analysis software package developed at JPL, the strategies of fixed precise orbits and fixed precise orbits and clocks for regional GPS data analysis are compared. It is shown with the statistical tests of the post fit residuals that conceivable signals still remain in the former solution while in the latter solution, they are basically noise. The discrepancy of these solutions from ITRF96 is computed as well as their repeatabilities to assess the solution strategies. It can be concluded that better solutions are those with reasonable post fit residuals. The statistical tests of the post fit residuals provide important assessments of the solution and they are easier to carry out than the usual external comparisons.