| 点位不确定性熵指标的确定 |
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| 引用本文： | 李大军,龚键雅,谢刚生.点位不确定性熵指标的确定[J].工程勘察,2002(2). |
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| 作者姓名： | 李大军 龚键雅 谢刚生 |
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| 作者单位： | 测绘遥感信息工程国家重点实验室，测绘遥感信息工程国家重点实验室，华东地质学院测量系 湖北武汉430079华东地质学院测量系，江西临川344000，湖北武汉430079，江西临川344000 |
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| 摘 要： | 点位不确定度量指标的确定是建立线元、面元不确定模型的基础。以往的点位不确定指标与置信水平密切相关 ,因而是不唯一的。本文引入信息论中联合熵的概念 ,提出了二维随机点的熵误差椭圆指标与三维随机点的熵误差椭球指标。所提的指标具有唯一确定、与置信水平无关的特点 ,用作点位不确定性的度量指标具有特殊优越性。
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| 关 键 词： | 联合熵 点位不确定性 熵误差椭圆 熵误差椭球 |
Determination of Entropy Indexes for Point Positional Uncertainty |
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| Li Dajun et al..Determination of Entropy Indexes for Point Positional Uncertainty[J].Geotechnical Investigation & Surveying,2002(2). |
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| Authors: | Li Dajun |
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| Affiliation: | Li Dajun et al. |
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| Abstract: | Determination of index for point positional uncertainty is the basis of developing line and area uncertainty model. Previous indexes are relevant to confident limit and of diversity. In this paper, Union Entropy is introduced while new error indexes, entropy error ellipse and entropy error ellipsoid are presented. These indexes are determined by entropy and they are independent of a certain confident limit and excellent superiority as measuring standard of point positional uncertainty. |
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| Keywords: | union entropy point positional uncertainty |
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