遗传算法在参差时变滤波器设计中的应用  

Application of Genetic Algorithm to Staggered Time-Variant Filter Design

作　　者：汪莉君[1] 罗丰[1] 吴顺君[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《雷达科学与技术》2005年第1期43-47,共5页Radar Science and Technology

摘　　要：　提出了一种将遗传算法应用于参差时变杂波抑制滤波器设计的方法。在参差码的约束范围内,可能出现参差码组合数很多的情况。遗传算法通过智能式搜索和渐进式优化快速有效地获得优化的参差码,使得计算量大大减小。同时,结合改善因子最大化法来设计滤波器的优化权系数。另外,使用适应度的缩放控制技术使遗传算法在用于参差码的搜索时得到了进一步改善。仿真结果显示该方法可行有效。The application of the genetic algorithm to staggered time-variant filter design for clutter rejection is presented in this paper. The genetic algorithm implements intellectualized searching and gradual optimization, so the optimal codes are obtained fast and effectually from large amounts of code combinations. And the computation decreases greatly. The filters optimal coefficients are designed by improvement factor maximization method. In addition, the zoom control of fitness amends the genetic algorithm in search of optimal codes. The simulation results verified the feasibility and effectiveness of the genetic algorithm.

关 键 词：参差码 遗传算法 改善因子 适应度 缩放控制 

分 类 号：TN957[电子电信—信号与信息处理]