| 不同小波基下的SAR图像相干斑抑制性能分析 |
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| 引用本文： | 韩春林,赵志钦,王建国.不同小波基下的SAR图像相干斑抑制性能分析[J].电子科技大学学报(社会科学版),2000(6). |
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| 作者姓名： | 韩春林 赵志钦 王建国 |
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| 作者单位： | 电子科技大学电子工程系!成都610054 |
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| 摘 要： | 分析了合成孔径雷达(SAR)图像中相干斑(Speckle)的统计特性。基于小波变换(WT),给出了一种多尺度的Speckle滤波方法,该方法利用小波分解后的HH分量(低频分量)作Speckle抑制,得到图像Speckle的相当大的改进。文中还对不同的小波基进行了理论分析,并利用实验数据,从等效视数(ENL)角度进行了比较,证实了不同小波基下该方法对Speckle具有较好的抑制性能。
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| 关 键 词： | 合成孔径雷达 相干斑 滤波 小波变换 等效视数 |
Analysis of SAR Speckle Filtering with Different Wavelets |
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| Han Chunlin,Zhao Zhiqin,Wang Jianguo.Analysis of SAR Speckle Filtering with Different Wavelets[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2000(6). |
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| Authors: | Han Chunlin Zhao Zhiqin Wang Jianguo |
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| Abstract: | This paper analyzes the statistics of speckle. Based on Wavelet transform, this paper gives a method for speckle suppression based on multiscale decomposition. The method uses the low frequency part HH in speckle filtering. The results show the effectiveness of the method. This paper also analyzes the performance of different wavelets. According to ENL , the results obtained by using different wavelets are compared. Some beneficial conclusions are given . |
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| Keywords: | synthetic aperture radar speckle filtering wavelet transform equivalent look |
| 本文献已被 CNKI 等数据库收录！ |
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