方差-协方差分量估计 Estimation of variance-covariance components
针对卫星精密定轨过程中观测资料存在粗差以及观测资料的合理定权问题，将抗差方差分量估计引入到卫星精密定轨中。
In this paper, the robust variance component estimation is introduced into the satellite orbit determination to resist the effects of outlying observations and to determine the weights.
本程序能对各种类型的控制网进行严密平差及方差分量估计，并输出平差后的各种信息。
The program can conduct rigorous adjustment and variance component estimation on all kinds of control networks and output all kinds of information after adjustment.
并对两类观测值，利用赫尔默特方差分量估计，通过多次迭代计算，提高平差精度。
With two types of observations, using Helmert variance component estimation, it can improve adjustment precision through multiple iterations.
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