학술논문
Reconstruction of Targets Based on Adaptive Complex ℓ1 Reweighted Minimization via Homotopy
Document Type
Conference
Author
Source
2021 CIE International Conference on Radar (Radar) Radar (Radar), 2021 CIE International Conference on. :2381-2385 Dec, 2021
Subject
Language
ISSN
2640-7736
Abstract
The stepped frequency (SF) signal plays an important role in the high-resolution radar system. In a complex radar environment, some echo pulses may be lost or be interfered with. Directly apply a conventional reconstructive algorithm to obtain high-resolution range profile (HRRP) will lead to high sidelobes in this case. In this paper, the adaptive complex $\ell_{1}$ reweighted minimization via homotopy (ACRW-H) is applied to deal with the problem above. The algorithm adaptively selects accurate regularization parameters (RPs) while updating the estimation to reconstruct HRRP when echo pulses are incomplete. Both simulation and real data experiments are presented to verify the effectiveness of the proposed method. It is shown that this algorithm gives better accuracy than some existing algorithms like OMP and $\ell_{1}$ minimization. The robustness to noise of the proposed method is also investigated.