| 一种改进小波阈值去噪方法的研究 |
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| 引用本文： | 王旭,刘文生,王昶.一种改进小波阈值去噪方法的研究[J].测绘科学,2011,36(5):179-180,242. |
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| 作者姓名： | 王旭 刘文生 王昶 |
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| 作者单位： | 1. 辽宁工程技术大学,辽宁阜新,123000
2. 吉林第一测绘院,吉林四平,136001 |
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| 摘 要： | 信号噪声的方差越大,信噪分离越困难,这样会降低小波在去噪方面的性能,使小波去噪得不到充分的发挥.为了解决这一问题,本文介绍一种方法:采用模糊控制滤波器对含噪信号进行预处理,从而降低白噪声的方差；然后用软、硬阈值法分别对处理过的信号进行去噪.仿真实验表明,去噪后的信号的信噪比和均方误差均优于单纯使用软、硬阈值算法,具有很...
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| 关 键 词： | 变形监测 小波分析 阈值去噪 模糊控制滤波器 |
An improved wavelet threshold de-noising method |
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| WANG Xu,LIU Wen-sheng,WANG Chang.An improved wavelet threshold de-noising method[J].Science of Surveying and Mapping,2011,36(5):179-180,242. |
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| Authors: | WANG Xu LIU Wen-sheng WANG Chang |
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| Institution: | ②(①Liaoning Engineering Technical University,Liaoning Fuxin 123000,China;②First Surveying and Mapping Institute of Jilin,Jilin Siping 136001,China) |
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| Abstract: | The greater is the variance of signal noise,the more difficult is signal to noise separation,which will reduce the performance of eliminating noise.In order to solve this problem,this article described a method:using fuzzy control filter to deal with noisy signal first,thereby reducing the variance of white noise;then using the soft and hard threshold methods to remove the noise of processed signal.Simulation results showed that SNR and MSE were both better than soft and hard threshold simply,having good de... |
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| Keywords: | deformation monitoring wavelet analysis threshold de-noising Fuzzy control filter |
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