| 基于等价方差-协方差抗差估计在GPS网平差中的应用 |
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| 引用本文： | 肖明,梁四幺,陈长坤,石长伟.基于等价方差-协方差抗差估计在GPS网平差中的应用[J].测绘与空间地理信息,2018(2):113-115,123. |
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| 作者姓名： | 肖明 梁四幺 陈长坤 石长伟 |
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| 作者单位： | 安徽理工大学 测绘学院,安徽 淮南,232001 |
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| 摘 要： | 在GPS网平差中,其观测值为三维基线向量,基线向量3个分量间存在较强的相关性,在平差时必须考虑。根据等价方差-协方差理论,本文以GPS网平差为例,对比IGG-2方案,说明了等价方差-协方差理论在相关观测抗差估计中的优越性。
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| 关 键 词： | GPS网平差 相关观测 抗差估计 等价方差-协方差 GPS network adjustment correlate observation robust estimation equivalent variance-covariance |
The Application of Robust Estimation on GPS Network Adjustment Based on Equivalent Variance-ovariance |
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| XIAO Ming,LIANG Siyao,CHEN Changkun,SHI Changwei.The Application of Robust Estimation on GPS Network Adjustment Based on Equivalent Variance-ovariance[J].Geomatics & Spatial Information Technology,2018(2):113-115,123. |
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| Authors: | XIAO Ming LIANG Siyao CHEN Changkun SHI Changwei |
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| Abstract: | Tri-dimensional baseline vector is the observation in GPS network adjustment, it exists strong correlations in its compo-nents, and we must take the correlation into consideration while adjusting. Based on the theory of equivalent variance-covariance, taking GPS network adjustment for example, the paper illustrates the advantages of equivalent variance-covariance in robust estima-tion in correlate observation with the comparison of IGG-2 robust scheme. |
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