基于改进粒子群算法的MIMO雷达布阵优化

针对MIMO雷达收发阵列在给定阵元数和阵列孔径下的布阵优化问题，将一种改进的粒子群算法———二分粒子群算法用于非均匀对称直线阵的旁瓣优化。该算法以MIMO雷达联合收发波束为优化对象，对MIMO雷达发射和接收阵列同时进行了布阵优化。仿真实验表明，当阵元数和孔径大小确定时，该算法可以在保证主瓣不展宽的情况下，将旁瓣峰值控制在－21dB以下，且与现有方法的相比，收敛速度更快。该算法在MIMO雷达设计方面具有一定的理论参考意义。

Optimization of Antenna Array Geometry in MIMO Radar Based on Improved P article Swarm Optimization

To solve the problem of MIMO radar array optimization under the constraints of the array number and the limited array aperture, a method based on improved particle swarm optimization(PSO)—dichotomic particle swarm optimization ( DPSO) for uniform symmetrical linear array to suppress side?lobe is proposed. The algorithm treats the synthesis beam of transmitting and receiving arrays as the optimization object, and optimizes both the transmitting and receiving array element position. The simulation results show that on condition that the array number and the limited array aperture are fixed, the val?ue of sidelobe peak can be controlled under -21dB without the mainlobe broadening, and the convergence speed is faster than methods in correlative papers.