TY - JOUR
T1 - Azimuth Ambiguity Suppression for Single Look Complex Image Based on Block Sparse Representation
AU - Li, Jieshuang
AU - Tao, Mingliang
AU - Li, Tao
AU - Tang, Chuheng
AU - Liu, Yanyang
AU - Wang, Ling
N1 - Publisher Copyright:
© The Institution of Engineering & Technology 2023.
PY - 2023
Y1 - 2023
N2 - Azimuth ambiguity affects image quality seriously, which poses a great challenge to post-processing methods. However, existing ambiguity suppression method mainly deals with the azimuth ambiguity in raw data or utilizing multi-channel information. This paper proposes a blind adaptive method for single-look complex (SLC) images with less prior information. The energy of azimuth ambiguity will be sparsely spread in each sub-look image by multi-look processing on the SLC image. Through robust principal component analysis, useful information embedded in each sub-look image is effectively reconstructed and the azimuth ambiguity is removed. By applying sub-look synthesis, the problem of azimuth resolution loss caused by sub-look images is effectively avoided. Experimental results demonstrate the effectiveness of the proposed method.
AB - Azimuth ambiguity affects image quality seriously, which poses a great challenge to post-processing methods. However, existing ambiguity suppression method mainly deals with the azimuth ambiguity in raw data or utilizing multi-channel information. This paper proposes a blind adaptive method for single-look complex (SLC) images with less prior information. The energy of azimuth ambiguity will be sparsely spread in each sub-look image by multi-look processing on the SLC image. Through robust principal component analysis, useful information embedded in each sub-look image is effectively reconstructed and the azimuth ambiguity is removed. By applying sub-look synthesis, the problem of azimuth resolution loss caused by sub-look images is effectively avoided. Experimental results demonstrate the effectiveness of the proposed method.
KW - Azimuth ambiguity
KW - Block sparse representation
KW - Robust principal component analysis (RPCA)
KW - Single look complex (SLC) Image
KW - Synthetic aperture radar (SAR)
UR - http://www.scopus.com/inward/record.url?scp=85203126429&partnerID=8YFLogxK
U2 - 10.1049/icp.2024.1478
DO - 10.1049/icp.2024.1478
M3 - 会议文章
AN - SCOPUS:85203126429
SN - 2732-4494
VL - 2023
SP - 2490
EP - 2493
JO - IET Conference Proceedings
JF - IET Conference Proceedings
IS - 47
T2 - IET International Radar Conference 2023, IRC 2023
Y2 - 3 December 2023 through 5 December 2023
ER -