Imaging method of ground moving targets based on compressed sensing

The amount of echo data is huge in ground moving targets imaging, which severely increases data transmission and storage load. To solve this problem, an imaging method of ground moving targets is proposed based on compressed sensing. Firstly, the displaced phase center antenna (DPCA) technique is induced to cancel the pulse compression echo data in the range direction with dualchannels. Secondly, the echo data in the azimuth direction is compressed by using the low dimensional measurement matrix, and the discrete fractional Fourier transform matrix is adopted as the sparse basis matrix. Then the smoothing L0 algorithm is utilized to reconstruct the moving targets, and the moving parameters of moving targets can be obtained by the optimal orders. Finally, the feasibility and effectiveness of the proposed method is proved by the simulation results.