Title :
Resolution-Preserving Two-Look Despeckling of SAR Images
Author :
Wang, Junfeng ; Liu, Xingzhao
Author_Institution :
Shanghai Jiao Tong Univ.
Abstract :
An improved two-look processing is presented to despeckle synthetic aperture radar (SAR) images. The azimuth spectrum is halved after a constant phase is removed. Each half is extrapolated conjugate symmetrically to form a full-band azimuth spectrum, and the full-band azimuth spectrum is used to generate a look. Then, the two looks are averaged incoherently to obtain a two-look image. In this algorithm, not only the speckle is suppressed but also the resolution is preserved
Keywords :
image resolution; radar imaging; radar resolution; synthetic aperture radar; SAR image; azimuth spectrum; despeckle synthetic aperture radar; resolution-preservation; two-look processing; Azimuth; Convolution; Extrapolation; Fourier transforms; Image resolution; Process design; Radar polarimetry; Scattering; Speckle; Synthetic aperture radar; Multilook Processing; SAR; Speckle;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343490
