摘要
若观测样本和参数先验信息含有异常信息,必然造成序贯平差参数估值及其协方差的扭曲。首先简述了序贯平差抗差估计,然后讨论了抗差自适应序贯平差,并对二者进行了分析比较,最后利用多种序贯平差方法对实测GPS数据进行计算,验证它们的抗差效果。
The sequential adjustment probably makes parameters and their posterior covariance fallible if there are anomalies in the prior parameters and the measurement data. After discussing robust estimation for sequential adjustment, the adaptively robust sequential adjustment is conducted, and these methods are compared. A GPS network is calculated respectively by several sequential adjustments methods to test their effects of robust estimation.
出处
《大地测量与地球动力学》
CSCD
北大核心
2007年第2期84-88,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(40274002
40474001)
地球空间与大地测量教育部重点实验室开放基金(1469990324233-04-11)
关键词
序贯平差
M-M抗差序贯平差
抗差自适应序贯平差
自适应估计
抗差估计
sequential adjustment, M-M robust estimation for sequential adjustment, adaptively robust estimation for sequential adjustment, adaptive estimation, robust estimation
