| 单历元变形量快速提取算法的实现与分析 |
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| 引用本文： | 李昭,邱卫宁,邱蕾,花向红.单历元变形量快速提取算法的实现与分析[J].测绘工程,2010,19(2):20-23. |
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| 作者姓名： | 李昭 邱卫宁 邱蕾 花向红 |
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| 作者单位： | 武汉大学测绘学院,湖北,武汉,430079;武汉大学测绘学院,湖北,武汉,430079;武汉大学灾害监测与防治研究中心,湖北,武汉,430079 |
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| 摘 要： | 单历元解算变形信息是解决实时变形监测问题的有效手段。将高精度基线向量作为已知条件,单历元快速求解变形量,研究并实现了顾及误差改正的单历元变形量快速提取算法,将原有的有效基线解算距离从5 km扩展到了10 km。计算实例表明,该算法可以保证10 km以内的基线解算精度达到毫米级。同时,根据获取的数据初步讨论精度改善效果随距离的变化情况。
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| 关 键 词： | 单历元 GPS变形监测 Neville插值 Niell投影函数 |
Research on algorithm and its realization for quick extraction of deformation information based on single epoch |
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| LI Zhao,QIU Wei-ning,QIU Lei,HUA Xiang-hong.Research on algorithm and its realization for quick extraction of deformation information based on single epoch[J].Engineering of Surveying and Mapping,2010,19(2):20-23. |
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| Authors: | LI Zhao QIU Wei-ning QIU Lei HUA Xiang-hong |
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| Institution: | 1; 2(1.School of Geodesy and Geomatics; Wuhan University; Wuhan 430079; China; 2.Research Center for Hazard Monitoring and Prevention; China); |
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| Abstract: | Using single epoch data to resolve deformation information is an effective way to solve the problem of real-time deformation monitoring.In this paper,the high precision baseline vector is used as the constraint condition so as to obtain deformation information by single epoch data.Research has been done on the algorithm and its realization for quick extraction of deformation information,considering error correction.Numerical results show that,the algorithm developed could ensure the GPS processing precision... |
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| Keywords: | single epoch GPS deformation monitoring Neville interpolation Niell mapping function |
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