| 平面随机线元等概率密度误差模型边界包络线 |
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| 引用本文： | 汤仲安.平面随机线元等概率密度误差模型边界包络线[J].测绘工程,2005,14(4):11-13,22. |
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| 作者姓名： | 汤仲安 |
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| 作者单位： | 湖南省国土资源信息中心,湖南,长沙,410011 |
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| 基金项目： | 国土资源部百名优秀青年科技人才计划 |
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| 摘 要： | 线状实体误差模型包络线既是GIS位置不确定性研究的重要内容,又是GIS可视化研究的关键指标.为了充分利用计算机技术求解符合GIS精度要求的误差模型包络线,基于文献1,2]中探讨过的等概率密度误差模型建模机理和数值算法,研究了平面随机线元等概率密度误差模型边界包络线的确定原理和计算方法,并通过实例辅以可视化分析,验证了原理的正确性和可操作性.
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| 关 键 词： | 随机线元 误差模型 包络线 数值算法 可视化 |
| 文章编号： | 1006-7949（2005）04-0011-03 |
| 收稿时间： | 2005-06-22 |
| 修稿时间： | 2005-06-22 |
Boundary envelop of the equivalent probability density error model to 2D spatial random line segment |
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| TANG Zhong-an.Boundary envelop of the equivalent probability density error model to 2D spatial random line segment[J].Engineering of Surveying and Mapping,2005,14(4):11-13,22. |
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| Authors: | TANG Zhong-an |
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| Institution: | Land and Naturl Resource Information Center of Hunan Province, Changsha 410011 ,China |
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| Abstract: | Boundary envelop of error model to linear entity is not only of the importance for GIS positional uncertainty theory research,but also the critical indicator for GIS positional uncertainty visualization research.In order to make use of compute technology sufficiently to obtain boundary envelop of error model which accords with GIS precision demand,based on the modeling theory of the Equivalent Probability Density Error Model(marked as "Tepdem" in brief) discussed in literature and the numerical value algorithm,the ascertaining theory and calculation method for boundary envelop of positional uncertainty error band to 2D spatial random line segment have been gone into particulars,and some important results have been presented by case study and visualization. |
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| Keywords: | random line segment error model envelop numerical value algorithm visualization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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