| 国家高精度GPS网整体平差中的粗差分析 |
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| 引用本文： | 施闯,刘经南.国家高精度GPS网整体平差中的粗差分析[J].武汉大学学报(信息科学版),1999(2). |
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| 作者姓名： | 施闯 刘经南 |
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| 作者单位： | 武汉测绘科技大学地学测量工程学院 |
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| 摘 要： | 分析了国家高精度ＧＰＳ网中的粗差观测量的特点，提出了采用相关分析的粗差探测理论，对国家高精度ＧＰＳ网的各子网和相邻子网进行粗差探测，并采用稳健估计的平差方法，消除粗差对平差结果的影响，大大提高了国家高精度ＧＰＳ网的整体平差精度。
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| 关 键 词： | 国家高精度GPS网 粗差分析 相关分析 稳健估计 |
Outlier Analysis in the Integrate Adjustment of National High precision GPS Network |
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| Shi Chuang,Liu Jingnan.Outlier Analysis in the Integrate Adjustment of National High precision GPS Network[J].Geomatics and Information Science of Wuhan University,1999(2). |
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| Authors: | Shi Chuang Liu Jingnan |
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| Abstract: | The national high precision GPS network for geodetic control is surveyed from 1991 to 1997. The GPS observation data are processed by GAMIT software. GAMIT baseline solution are used as observations for integrate adjustment. In this case the outlier baseline is very difficult to find out from 4 935 independent baselines. This paper uses correlation analysis theory to snoop the outliers. In the adjustment the outliers are kept but down weighted. This theory can find out multi outliers in correlative observations, and reduce the influence of the outliers. This paper also gives the step and principle for this outlier analysis theory. And gives the comparison of the result of the national high precision GPS network with outlier analysis. |
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| Keywords: | national high precision GPS network outlier analysis correlation analysis robust estimation |
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