| 基于谱修正迭代的Bursa模型 |
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| 引用本文： | 侯东阳,张书毕,万亚豪,刘玉婵.基于谱修正迭代的Bursa模型[J].海洋测绘,2011,31(5):15-17. |
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| 作者姓名： | 侯东阳 张书毕 万亚豪 刘玉婵 |
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| 作者单位： | 中国矿业大学环境与测绘学院,江苏徐州,221008 |
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| 摘 要： | 利用Bursa模型进行空间直角坐标转换时,求解的过程中如果法方程的系数矩阵是病态,则求得的转换参数并不可靠.在谱修正迭代法的基础上,推导了基于谱修正迭代的Bursa模型公式,通过算例可知该方法可有效改善病态矩阵对坐标转换的影响,其坐标转换精度比Bursa模型高.
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| 关 键 词： | 坐标转换 谱修正迭代法 Bursa模型 外推精度 |
Bursa Model Based on the Spectrum Correction Iteration Method |
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| HOU Dong-yang,ZHANG Shu-bi,WAN Ya-hao,LIU Yu-chan.Bursa Model Based on the Spectrum Correction Iteration Method[J].Hydrographic Surveying and Charting,2011,31(5):15-17. |
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| Authors: | HOU Dong-yang ZHANG Shu-bi WAN Ya-hao LIU Yu-chan |
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| Institution: | HOU Dong-yang,ZHANG Shu-bi,WAN Ya-hao,LIU Yu-chan(School of Environmental Science and Spatial Informatics in China University of Mining and Technology,Xuzhou,Jiangsu,221008) |
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| Abstract: | When using Bursa model to transform the coordinate,if the coefficient matrix is ill-posed in the course of computation,the obtained parameters are uncertain.Using the iteration method of spectrum correction,the paper derives the formula of Bursa model based on the spectrum correction iteration method and verifies the method effectively which improves the coordinate transformation effect of the ill matrix and the coordinate transformation accuracy is better than the Bursa model by the actual is example. |
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| Keywords: | the coordinate transformation the spectrum correction iteration method Bursa model extrapolation accuracy |
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