基于模拟退火算法的波束图设计

Beam Pattern Synthesis Based on Simulated Annealing Algorithm

文中提出了基于模拟退火算法的波束设计方法。其思想是按照给定的波束优化要求,建立某种相应的目标函数,利用模拟退火算法对波束的加权系数进行全局寻优,达到波束优化的目的。模拟退火算法模拟了固体缓慢退火从而获得最低内能的物理过程,是一种简单而有效的随机性全局优化算法。为证明该设计方法的可行性和有效性,给出了15元平面阵的设计实例以及仿真结果。结果表明,使用该方法设计的波束与常规方法相比,获得了更低的旁瓣级。

This paper proposes a method to optimize beam pattern synthesis based on simulated annealing algorithm. According to beam design perfornlance, it founds a relationship object function and makes the function optimum beam weighting value. As an effective way to make global optimization through random search, simulated annealing algorithm simulates the slow physical process of solid annealing to get lowest inner energy. A design example of 15 -element planar array is given to prove its feasibility and efficiency. Experimental results show that the proposed method achieves a much lower side - lobe level than the conventional method. The method proposed is a new way to design array beam pattern.