| 基于自适应噪声抵消与小波滤波的GPS监测误差分析 |
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| 引用本文： | 伊廷华,李宏男,伊晓东,王国新.基于自适应噪声抵消与小波滤波的GPS监测误差分析[J].武汉大学学报(信息科学版),2006,31(11):995-998. |
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| 作者姓名： | 伊廷华 李宏男 伊晓东 王国新 |
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| 作者单位： | 大连理工大学海岸与近海工程国家重点实验室,116024 |
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| 摘 要： | 对GPS载波相位测量误差进行了理论分析和试验研究。根据噪声特征以及它们对载波相位测量结果的影响，提出了基于自适应噪声抵消与小波滤波相结合的GPS噪声抑止方法。对具有强相关特性的多路径误差采用自适应噪声抵消方法，而对于不相关的高频噪声则通过合理选择小波分解层数对信号进行分解，对作用闽值后的小波系数进行重构，得到最后的变形信号。实测数据分析表明，该方法能有效地削弱多路径效应及测量随机噪声，较用单一方法对GPS数据进行消噪处理有较大的优越性。
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| 关 键 词： | 全球定位系统 自适应噪声抵消 小波 多路径效应 |
| 文章编号： | 1671-8860(2006)11-0995-04 |
| 修稿时间： | 2006年7月11日 |
On GPS Observation Errors with ANC Principles and Wavelet Denoise Method |
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| YI Tinghua,LI Hongnan,YI Xiaodong,WANG Guoxin.On GPS Observation Errors with ANC Principles and Wavelet Denoise Method[J].Geomatics and Information Science of Wuhan University,2006,31(11):995-998. |
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| Authors: | YI Tinghua LI Hongnan YI Xiaodong WANG Guoxin |
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| Abstract: | In order to derive a relatively noise-free time series from the GPS results,an integrated method based on adaptive noise cancelling principles and wavelet de-noise method is presented.To verify the effectiveness of the method,an experiment is carried out,the results indicate that the adaptive noise canceller is a powerful signal decomposer,which can significantly mitigate multipath effects since multipath tends to exhibit the same pattern between consecutive days;wavelet filter is a suitable tool to separate stochastic noise that cannot be filtered by ANC method form signal.This kind of combination is superior to single filtering method. |
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| Keywords: | global positioning system(GPS) adaptive noise cancellation(ANC) wavelet multipath |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
