| GPS动态监测中多路径效应的规律性研究 |
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| 引用本文： | 黄声享,李沛鸿,杨保岑,向东.GPS动态监测中多路径效应的规律性研究[J].武汉大学学报(信息科学版),2005,30(10):877-880. |
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| 作者姓名： | 黄声享 李沛鸿 杨保岑 向东 |
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| 作者单位： | 1. 武汉大学测绘学院,武汉市珞喻路129号,430079
2. 江西理工大学环境与建筑工程学院,赣州市红旗大道122号,341000 |
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| 基金项目： | 武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(020907) |
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| 摘 要： | 在分析GPS多路径效应特性的基础上,结合GPS动态变形监测的特点,对连续多天的观测数据解算结果采用滤波与周日位置求差相结合的方法进行数据处理。研究结果表明,多路径误差具有较强的周日重复性,在有效地削弱多路径效应的影响后,GPS动态监测的三维位置精度可以达到mm级,尤其是垂直方向的精度改善明显。
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| 关 键 词： | GPS动态定位 变形监测 多路径效应 规律性 |
| 文章编号： | 1671-8860(2005)10-0877-04 |
| 收稿时间： | 2005-07-29 |
| 修稿时间： | 2005年7月29日 |
Study on the Characteristics of Multipath Effects in GPS Dynamic Deformation Monitoring |
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| HUANG Shengxiang,LI Peihong,YANG Baocen,XIANG Dong.Study on the Characteristics of Multipath Effects in GPS Dynamic Deformation Monitoring[J].Geomatics and Information Science of Wuhan University,2005,30(10):877-880. |
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| Authors: | HUANG Shengxiang LI Peihong YANG Baocen XIANG Dong |
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| Institution: | 1 School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;2 Faculty of Environmental and Architectural Engineering, Jiangxi University of Science and Technology, 122 Hongqi Street, Ganzhou 341000, China |
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| Abstract: | The multipath has long been considered a major error source in GPS applications. This paper analyzes the characteristics of the GPS signal multipath effects, bases on which do an experiment that considers the characteristics of dynamic deformation monitoring. The solution results of observation data to successive two days are processed by a method, which combines the wavelet filtering and the differential correction between successive two days. The research demonstrates that the multipath errors have stronger repeatability on successive days; after significantly mitigating the influence of multipath effects, the accuracy of three-dimensional positioning for GPS dynamic deformation monitoring can attain the mm level, an obvious accuracy improving particularly in vertical component. The characteristics of GPS signal multipath, the experimental scheme and the qualitative and quantitative analysis of results are detailed. |
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| Keywords: | GPS dynamic deformation monitoring multipath effects error characteristic |
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