| 一种简化的Helmert方差分量估计算法 |
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| 引用本文： | 田远平 孙敏. 一种简化的Helmert方差分量估计算法[J]. 测绘工程, 1998, 7(1): 45-48,53 |
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| 作者姓名： | 田远平 孙敏 |
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| 作者单位： | [1]湖南城建高等专科学校 [2]中南工业大学 |
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| 摘 要： | Ｈｅｌｍｅｒｔ方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。
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| 关 键 词： | 单位权比 单位方差之比 Helmert方差 分量估计 |
A Simplified Algorithm of Helmert's Variance Components Estimation |
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| Tian Yuanping,Sun Min. A Simplified Algorithm of Helmert's Variance Components Estimation[J]. Engineering of Surveying and Mapping, 1998, 7(1): 45-48,53 |
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| Authors: | Tian Yuanping Sun Min |
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| Abstract: | 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. |
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| Keywords: | Proportion of the unit weight Proportion of the unit variance Helmert's variance component estimation |
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