单纯形-入侵杂草算法在阵列天线波束赋形的应用

Application of SM-IWO in Beam-forming of Array Antennas

针对入侵杂草算法在全局搜索过程中收敛速度慢的问题,文中提出基于单纯形的入侵杂草算法,并将该改进算法应用于阵列天线波束赋形中。单纯形-入侵杂草算法是利用单纯形局部搜索能力强,收敛速度快的特性,在平衡入侵杂草算法全局和局部寻优能力的同时,提高入侵杂草算法的收敛速度和计算精度。优化结果表明,与基本入侵杂草相比,该改进算法在阵列天线波束赋形中性能更佳。

For overcoming the problem of slow convergent speed of IWO in global searching, simplex method（SM）-invasive weed optimiza- tion （IWO） algorithm was proposed and applicated in beam-forming of array antennas, simplex method （ SM ） -invasive weed optimization （IWO） algorithm makes a balance between the global and local searching ability, and improves convergent speed by taking advantage of good local searching and fast convergent of SM. Simulation results prove that the improved algorithm has better performance compared with basic IWO.