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Gross Error Elimination Based on the Weight Iteration of Posterior Variance Estimation
Author(s): 
Pages: 28-30
Year: Issue:  5
Journal: Hydrographic Surveying and Charting

Abstract: 将抗差估计的思想融入到粗差探测的算法中,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.应用最小二乘法来计算观测值的参数、残差、协因数阵及单位权的初值,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,按照统计检验的方法剔除粗差.通过实验证明,基于验后方差估计原理导出的选权迭代具有很强的粗差探测能力.
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