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。
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 polarimetrie 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 polarimetrie information and speckle reduction.
出处
《无线电工程》
2009年第4期37-40,共4页
Radio Engineering
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
polarimetric synthetic aperture radar
polarimetric filter
waveform of sample signal
polarimetrie signature
relative standard deviation
