| GPS结构振动监测数据滤波方法及其性能实验研究 |
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| 引用本文： | 钟萍,丁晓利,郑大伟,陈武,徐幼麟.GPS结构振动监测数据滤波方法及其性能实验研究[J].测绘学报,2007,36(1):31-36,42. |
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| 作者姓名： | 钟萍 丁晓利 郑大伟 陈武 徐幼麟 |
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| 作者单位： | 香港理工大学,土地测量与地理咨询学系,香港,九龙;中国科学院,上海天文台,天文地球动力学研究中心,上海,200030;香港理工大学,土木与结构工程学系,香港,九龙 |
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| 基金项目： | 香港研究资助局资助项目
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香港理工大学建筑与地政学院 |
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| 摘 要： | 使用GPS监测结构振动的目的在于提取振动信号特征,但GPS观测量受多种误差源的影响,因此,选用合理的数据处理方法有效地分离各误差项,对于提高GPS的监测精度具有重要意义。将Vondrak滤波、小波滤波、自适应FIR滤波和卡尔曼滤波等四种方法应用于资料序列中振动信号的分离,通过对模拟振动实验观测资料的分析表明:运用滤波法可提高GPS测量微小动态变形和变频振动信号的检测能力;4种滤波法均能有效地提高GPS监测结构振动的精度,其中,Vondrak滤波和小波滤波的性能相当,且优于自适应FIR和卡尔曼滤波。同时,在对各滤波法参数选择的优缺点进行分析的基础上,提出不同情况下选择滤波器的建议。
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| 关 键 词： | Vondrak滤波 小波滤波 自适应FIR滤波 卡尔曼滤波 GPS 结构振动监测 |
| 文章编号： | 1001-1595（2007）01-0031-06 |
| 修稿时间： | 2006-03-282006-08-22 |
Filter-based GPS Structural Vibration Monitoring Methods and Comparison of Their Performances |
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| ZHONG Ping,DING Xiao-li,ZHENG Da-wei,CHEN Wu,XU You-lin.Filter-based GPS Structural Vibration Monitoring Methods and Comparison of Their Performances[J].Acta Geodaetica et Cartographica Sinica,2007,36(1):31-36,42. |
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| Authors: | ZHONG Ping DING Xiao-li ZHENG Da-wei CHEN Wu XU You-lin |
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| Institution: | 1. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China; 2. Cen ter for Astrogeodynamics Research, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, Chi na ; 3. Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China |
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| Abstract: | The purpose of GPS structural vibration monitoring is to obtain information on the frequency and amplitude of vibrations based on GPS observations that are often affected by various errors.Filters are frequently used to improve GPS accuracy and to retrieve vibration signals from GPS observational series.This paper studies the performances of four commonly used filters,i.e.,Vondrak,wavelet,adaptive FIR and Kalman filters,for such applications.Controlled experiments are carried out and the results show that the capability of GPS in tracking structural dynamics and complex signals can be improved with any of the filters.The performances of Vondrak and wavelet filters are almost the same and superior to the adaptive FIR and Kalman filters.Recommendations are given for the selection of filters and filter parameters for different situations based on an analysis of the advantages and disadvantages of each of the filters. |
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| Keywords: | Vondrak filter wavelet filter adaptive FIR filter Kalman filter GPS structural vibration monitoring |
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