Abstract: In this paper, a differential particle swarm optimization (DPSO) based method for MIMO radar antenna array synthesis is proposed. By optimizing element positions and excitation amplitude of transmitting receiving array, the method can achieve the control of both sidelobe levels and null depth. In DPSO, crossover, mutation, and random permutation operators origina－ting from differential evolutionary are introduced into basic PSO mechanisms to maintain the population diversity and improve global optimization capability. Numerical experimental results validate the effectiveness of the proposed method and its superiorities over other algorithms.