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| 稳健初值的选权迭代法剔除DEM数据粗差 | |
| 引用本文： | 孙同贺,闫国庆,周强波.稳健初值的选权迭代法剔除DEM数据粗差[J].测绘科学,2011,36(3):139-140,94. |
| 作者姓名： | 孙同贺 闫国庆 周强波 |
| 作者单位： | 1. 内蒙古科技大学矿业工程学院,内蒙包头,014010 2. 内蒙占第五地质矿产勘察开发院,内蒙古包头,014010 3. 核工业230研究所,长沙,410083 |
| 摘 要： | 本文将抗差估计的思想融入到数字高程模型粗差探测的算法中,设计出对模型误差、特别是粗差具有抵抗能力的粗差探测算法.稳健初值的选权迭代法即为抗差估计的一种,首先是通过线性规划的单纯形解法来计算观测值的残差,然后再根据残差和有关的参数,按所选择的权函数,计算每个观测值的权,经过迭代计算求得观测值的残差,然后按照统计检验的方法... |
| 关 键 词： | 数字高程模型 粗差的探测和剔除 抗差估计 |
Gross error elimination in DEM data by weight iteration with initial values |
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| SUN Tong-he,YAN Guo-qing,ZHOU Qiang-bo.Gross error elimination in DEM data by weight iteration with initial values[J].Science of Surveying and Mapping,2011,36(3):139-140,94. | |
| Authors: | SUN Tong-he YAN Guo-qing ZHOU Qiang-bo |
| Institution: | ③(①Mining Engineering Institute,Inner Mongolia University of Science and Technology,Baotou 014010,China;②Fifth Geology and Mineral Resources Institute in Inner Mongolia,Baotou 014010,China;③Research Institute No.230,Changsha 410083,China) |
| Abstract: | This article merged the idea of robust estimation into the algorithm of detecting gross errors in DEM,in order to design the algorithm of resisting the model errors,especially gross errors.Robust Estimation contains the method of weight iteration with initial values.First,it was by linear programming method to calculate the residual errors of observed values.Second,based on the residual errors and parameters,the new weight value for each observation according to the weight function was figured up.Third,the ... |
| Keywords: | digital elevation model(DEM) detection and elimination of gross errors robust estimation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |