| 均值漂移模型粗差探测法与LEGE法的比较 |
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| 引用本文： | 宋力杰,杨元喜.均值漂移模型粗差探测法与LEGE法的比较[J].测绘学报,1999,28(4):295-300. |
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| 作者姓名： | 宋力杰 杨元喜 |
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| 作者单位： | 1. 郑州测绘学院,河南郑州,450052
2. 西安测绘研究所,陕西西安,710054 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金，中国科学院重点实验室基金 |
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| 摘 要： | 粗差探测是测量数据处理、测量质量控制的重要研究主题之一。本文基于均值漂移模型详细分析论证了逐个粗地与多维粗差同时定位定值法（ＬＥＧＥ法）的原理、方法和粗差探测过程，并利用两个算例的没粗差个数和数值的各类情形进行了１０００次随机探测比较。由推证及计算表明，常规的探测法与多维粗差同时定位定值法在原理上基本等价，探测结果基本相近。
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| 关 键 词： | 均值漂移模型 粗差探测 粗差定位与定值 |
Comparison between Data Snooping and LEGE |
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| SONG Li-jie,YANG Yuan-xi.Comparison between Data Snooping and LEGE[J].Acta Geodaetica et Cartographica Sinica,1999,28(4):295-300. |
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| Authors: | SONG Li-jie YANG Yuan-xi |
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| Abstract: | Data Snooping or outlier detection is a main research subject in measurement data processing and measurement quality controlling. The principle and outlier detection procedures of LEGE and the Data Snooping based on the expectation drift model are discussed and analyzed in detail. Two examples with 1 000 kinds of multi outliers and different error values are detected and compared based on the two procedures. It is shown by the derivations and computations that the Data Snooping and LEGE are nearly equivalent in principle, the detection results are also approximately equivalent. |
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| Keywords: | expectation drift model data snooping gross error location and evaluation |
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