| 动态变形监测多路径实时修正模型研究 |
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| 引用本文： | 刘超,王坚,胡洪,高井祥.动态变形监测多路径实时修正模型研究[J].武汉大学学报(信息科学版),2010(4). |
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| 作者姓名： | 刘超 王坚 胡洪 高井祥 |
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| 作者单位： | 中国矿业大学江苏省资源环境信息工程重点实验室;中国矿业大学环境与测绘学院; |
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| 基金项目： | 国家自然科学基金资助项目(40774010,40904004); 煤炭资源与安全开采国家重点实验室开放研究基金资助项目(08KF07); 国家教育部博士点专项基金资助项目(200802901516) |
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| 摘 要： | 多路径效应是GPS高精度实时动态变形监测中的主要误差源,通过经验模态分解方法对三维坐标序列进行多尺度分解和重构,提取作为趋势项的多路径模型;并利用多路径效应的周日强相关性特点,对第二天动态坐标进行多路径效应去除,得到削弱多路径效应后的坐标序列。研究结果表明,多路径效应削弱后的坐标序列稳定性明显增强,坐标的精度明显提高。
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| 关 键 词： | 经验模态分解 多路径效应 动态变形监测 |
Research on Real-time Correcting Model of Multipath in GPS Dynamic Deformation Monitoring |
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| LIU Chao, WANG Jian HU Hong, GAO Jingxiang.Research on Real-time Correcting Model of Multipath in GPS Dynamic Deformation Monitoring[J].Geomatics and Information Science of Wuhan University,2010(4). |
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| Authors: | LIU Chao WANG Jian HU Hong GAO Jingxiang |
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| Institution: | LIU Chao1,2 WANG Jian2 HU Hong1,2 GAO Jingxiang2(1 Jiangsu Key Laboratory of Resources , Environmental Information Engineering,China University of Mining , Technology,South Sanhuan Road,Xuzhou 221008,China)(2 School of Environment Science & Spatial Informatics,China) |
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| Abstract: | The GPS signal multipath effects is considered as a major error sources for the high-precision real-time dynamic deformation monitoring.The trend being extracted from the three-dimensional coordinate series are multipath model by using empirical mode decomposition(EMD) method;The research demonstrates that the multipath effects have strong correlation between two successive days,and after the coordinate series being corrected through the first day's multipath model,the new coordinate series generate.The res... |
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| Keywords: | empirical mode decomposition multipath effects dynamic deformation monitoring |
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