| 一种新的极化滤波综合性能评估方法 |
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| 引用本文： | 汪洋,鲁加国,张芬.一种新的极化滤波综合性能评估方法[J].无线电工程,2009,39(4). |
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| 作者姓名： | 汪洋 鲁加国 张芬 |
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| 作者单位： | 1. 中国电子科技集团公司第三十八研究所,安徽,合肥,230031
2. 安徽大学,电子科学与技术学院,安徽,合肥,230039 |
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| 摘 要： | 极化合成孔径雷达(SAR)可以获得目标散射的相位信息,这种更加丰富的信息为极化SAR图像相干斑噪声抑制提供了更好的解决方法。通过对几种典型的极化滤波技术的算法实现,基于采样信号波形图、极化特征图和相对标准差,提出了一种新的极化滤波综合性能评估方法。对实测极化SAR数据进行实验验证,结果表明局部统计滤波在图像分辨率的保持、极化信息的保留和相干斑噪声的抑制3个方面都有很好的效果。
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| 关 键 词： | 极化合成孔径雷达 极化滤波 采样信号波形图 极化特征图 相对标准差 |
A New Method for Evaluating Different Polarimetric Filters |
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| WANG Yang,LU Jia-guo,ZHANG Fen.A New Method for Evaluating Different Polarimetric Filters[J].Radio Engineering of China,2009,39(4). |
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| Authors: | WANG Yang LU Jia-guo ZHANG Fen |
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| Abstract: | Polarimetric synthetic aperture radar can obtain phase information of scattering targets.It is a way to reduce the speckle in polarimetric SAR image.In this paper,a new method for evaluating the performance of polarimetric filters is presented by carrying out several polarimetric filters based on the waveform of sample signals,polarimetric signatures and relative standard deviation.Experiments are implemented for the measured polarimetric SAR data.The results show that local statistical filter has good performance in three aspects,i.e.preserving the resolution of images,reservation of polarimetric information and speckle reduction. |
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| Keywords: | polarimetric synthetic aperture radar polarimetric filter waveform of sample signal polarimetric signature relative standard deviation |
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