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研究正交MIMO雷达在给定发射、接收天线孔径长度和阵元数目固定等约束条件下的天线方向图综合问题。MIMO雷达采用稀布天线,为了克服栅瓣效应并且降低旁瓣电平,同时为了避免遗传算法早熟收敛,进入局部最优,提出了一种与模拟退火算法相结合的多重混合遗传布阵优化方法。该方法为了保证系统最大自由度,引入了距离扰动,同时对发射天线和接收天线的位置进行优化,有效解决了MIMO雷达天线方向图综合中低旁瓣电平设计问题。仿真结果证明了所提算法的有效性和优越性。
The antenna pattern synthesis problem of quadrature MIMO radar is studied under the constraints of a given transmission, the length of the receiving antenna aperture and the number of elements. In order to overcome the grating lobe effect and reduce the sidelobe level, MIMO radar is used to overcome the grating lobe effect and to avoid the premature convergence of genetic algorithm and to enter the local optimum. A hybrid hybrid genetic array optimization method based on simulated annealing is proposed . In order to ensure the maximum degree of freedom of the system, this method introduces distance perturbation and optimizes the positions of the transmitting antenna and the receiving antenna, which effectively solves the problem of low sidelobe level design in MIMO radar antenna pattern synthesis. The simulation results prove the effectiveness and superiority of the proposed algorithm.