摘要
相干斑抑制是合成孔径雷达 (syntheticapertureradar,SAR)图像后处理的首要问题。在多纹理假设下 ,采用最大似然方法来同时估计多个极化通道纹理参数。该方法保存了极化信息 ,消除了极化通道间的耦合 ,取得了较好的相干斑抑制效果 ;并与极化白化滤波 (polarimetricwhiteningfilter,PWF)
The reduction of speckle in SAR image is the prime problem in SAR image processing. We propose a new approach to polarimetric SAR speckle reduction. We estimate simultaneously the texture parameters of multi polarimetric channels by the method of maximum likelihood under the assumption of multiple textures. This approach preserves the polarimetric properties, reduces the coupling between polarimetric channels. We also compare it with the PWF and Lee′s optimal weighting algorithms.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2003年第1期122-125,共4页
Systems Engineering and Electronics
关键词
合成孔径雷达
相干斑
纹理
最大似然估计
Synthetic aperture radar
Speckle
Texture
Maximum likelihood estimate
