| 无缝仿射基准转换模型的方差分量估计 |
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| 引用本文： | 李博峰.无缝仿射基准转换模型的方差分量估计[J].测绘学报,2016,45(1):30-35. |
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| 作者姓名： | 李博峰 |
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| 作者单位： | 同济大学测绘与地理信息学院, 上海 200092 |
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| 基金项目： | 国家自然科学基金(41374031;41574023)，地理信息工程国家重点试验室开放基金(SKLGIE2013-M-2-2)，测绘地理信息公益性行业科研专项经费(HY14122136)，The National Natural Science Foundation of China(.41374031;41574023)，Open Research Fund of the State Key Laboratory of Geoinformation Engineering(SKLGIE2013-M-2-2)，The China Special Fund for Surveying |
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| 摘 要： | 以无缝仿射基准变换为例,研究了无缝基准转换模型的方差分量估计理论,导出无缝基准变换过程中两套坐标的方差分量估计公式。通过模拟试验分析表明,采用方差分量估计方法能正确地恢复出客观体现两套坐标误差的方差值,从而有效提高无缝基准转换精度。
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| 关 键 词： | 无缝基准转换 仿射变换 方差分量估计 |
| 收稿时间： | 2014-12-22 |
| 修稿时间： | 2015-08-30 |
Variance Component Estimation in the Seamless Affine Transformation Model |
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| LI Bofeng.Variance Component Estimation in the Seamless Affine Transformation Model[J].Acta Geodaetica et Cartographica Sinica,2016,45(1):30-35. |
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| Authors: | LI Bofeng |
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| Institution: | College of Surveying and Geo-informatics, Tongji University, Shanghai 200092, China |
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| Abstract: | With the seamless affine transformation as an instance, the variance component estimation (VCE) theory is studied in the seamless datum transformation. The VCE formula of the seamless transformation model is derived. The results from the simulation experiments show that the VCE can correctly recover the objective variance components of coordinates in two datums. As a result, the accuracy of seamless transformation can be improved. |
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| Keywords: | seamless datum transformation affine transformation variance component estimation |
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