| 形变分析中权矩阵的确定 |
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| 引用本文： | 柴洪洲,崔岳.形变分析中权矩阵的确定[J].测绘学院学报,2006(4). |
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| 作者姓名： | 柴洪洲 崔岳 |
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| 作者单位： | 信息工程大学测绘学院 河南郑州450052 |
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| 摘 要： | 介绍了形变分析中经常采用的两种方法:直接法和间接法。针对形变分析中关键的形变参数及其精度估计问题,提出了改进间接分析方法,即采用验后方差估值和协方差矩阵重新定义间接法中伪观测值的权矩阵。通过分析和算例表明,改进以后的间接法计算得到的监测网的形变量更能准确的反映实际形变情况。
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| 关 键 词： | 形变分析 权矩阵 直接法 间接法 |
Determination of Weight Matrix in Deformation Analysis |
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| CHAI Hong-zhou,CUI Yue.Determination of Weight Matrix in Deformation Analysis[J].Journal of Institute of Surveying and Mapping,2006(4). |
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| Authors: | CHAI Hong-zhou CUI Yue |
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| Abstract: | The direct solution and the indirect solution for deformation analysis were discussed in this paper.To improve the precision of deformation parameter estimators,the improved indirect solution was presented.The weight of pseudomeasurements was re-determined based on the posterior variance-covariance matrix.In numeric experiments,the precision of the deformation parameters calculated by improved indirect solution was better than one by direct solution. |
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| Keywords: | deformation analysis weight matrix direct solution indirect solution |
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