| 基于小波变换和中值滤波的InSAR干涉图像滤波方法 |
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| 引用本文： | 汪鲁才,王耀南,毛六平.基于小波变换和中值滤波的InSAR干涉图像滤波方法[J].测绘学报,2005,34(2):108-112. |
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| 作者姓名： | 汪鲁才 王耀南 毛六平 |
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| 作者单位： | 湖南大学,电气与信息工程学院,湖南,长沙,410082;湖南师范大学,湖南,长沙,410081;湖南大学,电气与信息工程学院,湖南,长沙,410082 |
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| 基金项目： | 国家自然科学基金
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德国科研项目
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湖南省自然科学基金 |
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| 摘 要： | 介绍小波分析的基本理论和利用小波分析对信号进行消除噪声的基本方法,以及In-SAR干涉相位图像中噪声的特点.针对目前普遍采用的均值滤波和中值滤波等方法对In-SAR干涉相位图像中噪声进行滤波的局限性,提出一种基于小波分析和中值滤波相结合的InSAR干涉相位图滤波算法以改善滤波效果.实验证明该算法的有效性.
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| 关 键 词： | 小波分析 InSAR 滤波算法 |
| 文章编号： | 1001-1595(2005)02-0108-05 |
An Algorithm of Interferometric Phase Filter of InSAR Based on Wavelet Analysis and Median Filter Algorithm |
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| WANG Lu-cai,WANG Yao-nan,MAO Lu-ping.An Algorithm of Interferometric Phase Filter of InSAR Based on Wavelet Analysis and Median Filter Algorithm[J].Acta Geodaetica et Cartographica Sinica,2005,34(2):108-112. |
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| Authors: | WANG Lu-cai WANG Yao-nan MAO Lu-ping |
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| Abstract: | The basic theory of wavelet analysis and the methods of noise elimination for signals with wavelet analysis are introduced, and the characteristics of noise in phase interferogram are dissertated. The average-value-filter and the median-value-filter are employed usually in phase interferogram, and the result was not satisfactory. An algorithm of interferometric phase filter of InSAR based on wavelet analysis and median filter algorithm is advanced to improve the result, and experiments demonstrated the validity of the algorithm. |
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| Keywords: | wavelet analysis InSAR filter algorithm |
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