| Vondrak滤波法用于结构振动与GPS多路径信号的分离 |
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| 引用本文： | 钟萍,丁晓利,郑大伟,陈武. Vondrak滤波法用于结构振动与GPS多路径信号的分离[J]. 中南大学学报(自然科学版), 2006, 37(6): 1189-1194,1195 |
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| 作者姓名： | 钟萍 丁晓利 郑大伟 陈武 |
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| 作者单位： | 1. 香港理工大学,土地测量与地理咨询学系,九龙,红磡
2. 中国科学院,上海天文台天文地球动力学研究中心,上海,200030 |
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| 基金项目： | 香港研究资助局资助项目;香港理工大学建筑与地政学院项目 |
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| 摘 要： | 根据Vondrak滤波法在信号的截断频带上具有较高信号分辨率的特点，将Vondrak带通滤波法应用于全球定位系统（GPS）结构变形监测中以分离结构振动和多路径效应的影响。对GPS实际观测资料进行分析，结果表明：采用该方法不仅能从坐标序列中成功提取结构振动信息，也能正确分离载波相位双差观测值的残差序列中的结构振动和多路径效应影响，因而在提高GPS定位精度上具有较大的应用潜力。
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| 关 键 词： | Vondrak滤波法 全球定位系统 多路径效应 结构变形监测 结构振动 |
| 文章编号： | 1672-7207（2006）06-1189-07 |
| 收稿时间： | 2006-02-14 |
| 修稿时间： | 2006-02-14 |
Separation of structural vibrations and GPS multipath signals using Vondrak filter |
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| ZHONG Ping,DING Xiao-li,ZHENG Da-wei,CHEN Wu. Separation of structural vibrations and GPS multipath signals using Vondrak filter[J]. Journal of Central South University:Science and Technology, 2006, 37(6): 1189-1194,1195 |
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| Authors: | ZHONG Ping DING Xiao-li ZHENG Da-wei CHEN Wu |
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| Affiliation: | 1. Department of Land Surveying and Geo-Informatics, Hong Kong Polytechnic University, Hung Horn, Kowloon, Hong Kong, China; 2. Center for Astrogeodynamics Research, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China |
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| Abstract: | Vondrak bandpass filter,which has good signal resolution over its signal truncation frequency band and is effective in separating structural vibrations from global positioning system(GPS) multipath effects,was applied to GPS structural deformation monitoring.Real GPS observations were used to test the performance of the proposed filter.The results show that the method has the potential to improve the quality of GPS results,which can successfully extract the desired vibration signals from the point coordinate series and separate the structural vibrations and multipath signals from the double-difference carrier-phase observation residuals series. |
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| Keywords: | Vondrak filter global positioning system multipath effects structural deformation monitoring structural vibrations |
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