| 基于误差方程常数项的变权迭代法在核电测量中的运用 |
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| 引用本文： | 陈本富,郭先春,邹自力.基于误差方程常数项的变权迭代法在核电测量中的运用[J].华东地质学院学报,2009,32(3):271-274. |
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| 作者姓名： | 陈本富 郭先春 邹自力 |
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| 作者单位： | [1]河海大学土木工程学院,江苏南京210098 [2]东华理工大学地球科学与测绘工程学院,江西抚州344000 |
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| 摘 要： | 测量平差处理过程中对大量的观测数据进行误差性质的有效实时甄别，尽量减少误差较大的观测值对最终成果质量的显著影响，在测量数据处理中具有重要的意义。结合核电平面控制测量特点，给出了判别方向、距离观测异常值阀值的简易计算方法，可以对异常观测值进行有效探测；指出在求解待定点未知参数前对异常值进行动态定权，可以保证最终观测成果质量不受异常值的显著影响，相对稳健估计利用验后观测值残差动态定权，可以提高数据处理效率及质量。
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| 关 键 词： | 变权迭代 误差方程 常数项 阀值 异常观测值 |
Application of Iterative Method with Dynamic Weight Based on Observation Equation's Constant in NPP's Surveying |
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| Institution: | CHEN Ben-fu, GUO Xian-chun, ZOU Zi-li (1. College of Civil Engineering, Hohai University, Nanjing, JS 210098, China; 2. Faculty of Geoscience and Survey Engineering, East China Institute of Technology, Fuzhou, JX 344000, China) |
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| Abstract: | It＇ s useful to identify the data with errors from the large number of observations during the process of adjustment to decrease the influence of the errors and to improve the quality of the final surveying result. Based on practical conditions of the nuclear power plant＇ s plain control network, it has been given on how to simply calcu- late the threshold value which used to pre-weight each datum before adjustment calculation; it shows some superi- orities in efficiency on data snooping and in quality of the final calculation compared with some traditional methods such as robust estimation, which process data with dynamic weight based the observation＇ s correction after each iteration. |
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| Keywords: | iteration with dynamic weight error equation constant term threshold value abnormal observation value |
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