基于MPPSO的线性分布细金属柱体成像研究  

Study on Linear Distribution Imaging of Thin Metallic Cylinders Based on Multi-Phase Particle Swarm Optimization

作　　者：方良[1] 童创明[1] 黄国荣[2] 夏训辉[2] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800 [2]空军工程大学工程学院,陕西西安710038

出　　处：《上海航天》2009年第6期22-24,34,共4页Aerospace Shanghai

基　　金：毫米波国家重点试验室(K200907)

摘　　要：基于线性分布细金属柱体的散射模型,用多极子展开求解电磁散射问题。以测量的散射场和计算散射场偏差为目标函数,将待优化变量设置为描述细金属柱体中心位置的向径和幅角,通过多相粒子群算法(MPP-SO)优化待优化变量,通过使目标函数达到最小值实现自由空间中线性分布的细金属柱体族的电磁成像。算例表明:MPPSO有较好的收敛性能和成像精度,以及较强的抗随机噪声干扰能力。A scattering model using a multiple expansion was used to solve the scattering problem for linear distribution of thin metallic cylinders in this paper.The error between measured scattering data and computed scattering data was considered as the object function.The center position of each thin metallic cylinder was denoted by polar coordinates parameters.The inverse scattering problem was transferred into a optimization problem by minimizing the object function with the polar coordinates parameters being optimization parameters which were solved by multi-phase particle swarm optimization（MPPSO）.The simulation results showed that MPPSO had the excellent performance of good convergence and imaging precision,which was robust and anti-jamming.

关 键 词：细金属柱体 电磁逆散射 多相粒子群算法 优化 收敛 

分 类 号：TN011[电子电信—物理电子学]