一种局部优化的粒子群低副瓣波束形成方法  

Local optimization method for particle swarm low⁃sidelobe beam forming

作　　者：崔伟 张冰[2] 余岚[1] CUI Wei;ZHANG Bing;YU Lan(The 722 Research Institute of CSIC,Wuhan 221116,China;Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]中国船舶重工集团公司第722研究所,湖北武汉221116 [2]江苏科技大学,江苏镇江212003

出　　处：《现代电子技术》2021年第5期57-60,共4页Modern Electronics Technique

基　　金：“十三五”国防预研基金项目。

摘　　要：粒子群算法因其概念简单、精度高和容易实现等特点,吸引了很多领域学者的关注,但存在易陷入局部最优的缺陷。在研究阵列天线低副瓣赋形过程中,发现使用粒子群算法得到的波束方向图低副瓣效果不明显且不稳定,在此基础上提出一种局部优化的改进粒子群算法,该方法具有避免早熟收敛、加快收敛速度的特点。使用Matlab仿真验证表明,这种方法能有效地降低方向图副瓣电平,实现低副瓣赋形。The particle swarm algorithm has attracted the attention of scholars in many fields because of its characteristics of simple concept,high precision and easy implementation.However,it has a deficiency of being prone to falling into local optimum.In the study of the low sidelobe shaping of array antenna,it is found that the low sidelobe effect of the beam pattern obtained by the particle swarm algorithm is not obvious and unstable.Therefore,an improved particle swarm algorithm with local optimization is proposed on the basis of the previous discovery.This method has the advances of avoiding premature convergence and speeding up the rate of convergence.The results of Matlab simulation show that the new method can effectively reduce the sidelobe level of the pattern and achieve low sidelobe shaping.

关 键 词：阵列天线 粒子群算法改进 方向图 局部优化 早熟收敛 低副瓣赋形 

分 类 号：TN828.4-34[电子电信—信息与通信工程]