Polarimetric SAR Speckle Filtering for Highresolution SAR Images using RADARSAT-2 POLSAR SLC data
In this paper,an algorithm in polarimetric synthetic aperture radar (POLSAR) speckle filtering is proposed,which is more suitable for high-resolution SAR images.Firstly,the filter applies a method based on scattering model to retain strong point targets and avoid their effect on other pixels around.Then it uses statistic characteristic,improved edges and lines detector,as well as adaptive window size regulation to smooth speckle in homogeneous areas and preserve details in non-homogeneous areas.At last,this algorithm follows Lees principle when filtering the covariance matrix to preserve polarimetric properties and avoid crosstalk between polarization channels.To verify this algorithms validity,RADARSAT-2 C-Band POLSAR SLC data are used.Results show that the proposed filter performs well in speckle reduction,strong point target and structural feature retention and polarimetric properties preservation,compared with Boxcar,Refined Lee POLSAR Speckle Filter and SMBSF.
high-resolution SAR POLSAR speckle filtering scattering model CFAR edge detector
Xu-nan Liu Bo Cheng
Center for Earth Observation and Digital Earth Chinese Academy of Sciences Graduate University of Ch Center for Earth Observation and Digital Earth Chinese Academy of Sciences
国际会议
厦门
英文
1-6
2012-12-16（万方平台首次上网日期，不代表论文的发表时间）