Multitarget detection for single-base co-prime MIMO radar

Abstract

The issue of target detection for the single-base co-prime MIMO radar is studied, and propose a target detection algorithm for fusion of 2D-FFT algorithm and Unitary Root-MUSIC algorithm. Compared with the traditional MIMO radar, the coprime MIMO radar is able to enhance the virtual degrees of freedom by increasing the array element spacing, thus improving the angular resolution of target detection. The algorithm utilizes a co-prime array as the transceiver array of the radar, and adopts 2D-FFT target detection algorithm to obtain the target's Range Doppler map(RD map), then performs peak detection on the target's RD map to obtain the target's distance and velocity information. Finally, the Unitary Root-MUSIC algorithm is used to solve the target DOA information. Under the condition of the same number of array elements, the DOA estimation performance of the co-prime MIMO array outperforms that of the uniform MIMO array and the conventional uniform line array.