摘要
Helmert法是通过求出两类观测值的单位方差，来修正其先验权，用迭代法最终求得正确的权。本文提出，如果已知两类观测值的单位方差之比，即可定出正确的权，从而使计算简单化。
Helmert method updates a priori weights through solving unit variance of two sorts of observed values, and solves the right weight through repeated algorithm.The paper put forword that if proportion of the unit variance of two sorts of observed values are known. then the right weight can be defined, there fore simplified the calculation.
出处
《测绘工程》
CSCD
1998年第1期45-48,53,共5页
Engineering of Surveying and Mapping
关键词
单位权比
单位方差之比
Helmert方差
分量估计
Proportion of the unit weight
Proportion of the unit variance
Helmert's variance component estimation
