1. Inverse synthetic aperture radar imaging based on two-dimensional fast orthogonal matching pursuit algorithm.
- Author
-
Wei, Xu, Yang, Jun, Lv, Mingjiu, Chen, Wenfeng, Ma, Xiaoyan, Long, Ming, Xia, Saiqiang, and Huang, Liang
- Subjects
- *
INVERSE synthetic aperture radar , *ORTHOGONAL matching pursuit , *SYNTHETIC apertures , *SYNTHETIC aperture radar , *ALGORITHMS - Abstract
With regard to inverse synthetic aperture radar imaging with limited bandwidth and sparse aperture, it is a challenge to traditional range-Doppler (RD) algorithm. We proposed an innovative two-dimensional (2D) joint sparse imaging algorithm, namely, 2D fast orthogonal matching pursuit (2D-FOMP) algorithm. In the proposed algorithm, one-dimensional OMP (1D-OMP) is extended to 2D-OMP in the complex domain from three aspects of atom recognition, projection update, and residual update. Then, the equivalence between 1D-OMP and 2D-OMP is analyzed theoretically. Meanwhile, two strategies that multi atom recognition and matrix recursive update are added in 2D-OMP to further improve the reconstruction speed of 2D-FOMP. Experimental results based on both simulated and measured data demonstrate that the proposed algorithm has good imaging performance under noisy and sparse conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF