摘要
当观测值中含有粗差时 ,检验表明 Helm ert方差分量估计结果同样含有粗差 ,且粗差还可能会发生转移。为有效地抵制粗差和随机模型误差的互相影响 ,指出了发生这一转移的原因 ,介绍了基于双因子等价权的抗差估计 ,并针对相关 Helm ert方差分量估计抗差解求解过程中容易出现的法矩阵 0值溢出问题 。
Blunder test shows that the results of variance component estimation for Helmert type also contain gross errors and the gross errors will probably be transformed when observations contain blunders in this paper. To avoid interacting between blunders and stochastic model errors, the solution of variance component estimation for Helmert type is introduced base on double factors equivalent prior and is improved at the same time.
出处
《测绘信息与工程》
2002年第6期5-7,共3页
Journal of Geomatics
