TY - GEN
T1 - ISAR imaging of uniformly rotating targets via parametric weighted L 1 minimization
AU - Rao, Wei
AU - Li, Gang
AU - Wang, Xiqin
AU - Xia, Xiang Gen
PY - 2011
Y1 - 2011
N2 - The ISAR imaging problem can be converted to a sparse recovery problem and efficiently solved by a weighted L 1 minimization algorithm, which outperforms the regular L 1 minimization substantially, provided the sparse representation is already known. However, the sparse representation of the ISAR signal is related to the target rotation rate, which is usually unknown for noncooperative target. In this paper, we propose a computationally efficient parametric weighted L 1 minimization algorithm to retrieve both the sparse representation and the ISAR image. The proposed algorithm can adaptively update the rotation rate estimation to the true value after several iterations. Numerical experiments show that the approach is efficient in estimating the target rotation rate and recovering the high resolution ISAR image.
AB - The ISAR imaging problem can be converted to a sparse recovery problem and efficiently solved by a weighted L 1 minimization algorithm, which outperforms the regular L 1 minimization substantially, provided the sparse representation is already known. However, the sparse representation of the ISAR signal is related to the target rotation rate, which is usually unknown for noncooperative target. In this paper, we propose a computationally efficient parametric weighted L 1 minimization algorithm to retrieve both the sparse representation and the ISAR image. The proposed algorithm can adaptively update the rotation rate estimation to the true value after several iterations. Numerical experiments show that the approach is efficient in estimating the target rotation rate and recovering the high resolution ISAR image.
KW - ISAR imaging
KW - parametric weighted L minimization
KW - rotation rate estimation
KW - uniformly rotating target
UR - https://www.scopus.com/pages/publications/83755182837
M3 - Conference contribution
AN - SCOPUS:83755182837
SN - 9788993246179
T3 - 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011
SP - 363
EP - 366
BT - 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011
T2 - 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011
Y2 - 26 September 2011 through 30 September 2011
ER -