| 一种阵列天线零点形成的新方法 |
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| 引用本文： | 殷友廷,杨莘元,冯春楠.一种阵列天线零点形成的新方法[J].应用科技,2007,34(8):5-8,13. |
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| 作者姓名： | 殷友廷 杨莘元 冯春楠 |
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| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 提出了一种新型的幅值扰动形成零陷的方法，通过在幅值扰动的过程中引入遗传算法来进化寻优，从而达到在指定方向形成一定深度零陷的目的．为了克服基本遗传算法易于早熟和局部寻优能力较差的不足，采用了改进的小生境遗传算法．该零陷形成方法克服了传统零陷形成方法零陷深度不足、副瓣电平高等缺陷．仿真表明，该方法能较好地达到设计要求，且有较好的收敛速度和稳定性．与其他一些方法相比较，该法有更广阔的应用前景．
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| 关 键 词： | 小生境 遗传算法 幅值扰动 阵列天线 零点形成 |
| 文章编号： | 1009-671X（2007）08-0005-05 |
| 修稿时间： | 2007-03-27 |
A new method for null steering in antenna arrays |
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| YIN You-ting,YANG Shen-yuan,FENG Chun-nan.A new method for null steering in antenna arrays[J].Applied Science and Technology,2007,34(8):5-8,13. |
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| Authors: | YIN You-ting YANG Shen-yuan FENG Chun-nan |
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| Institution: | College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | A new method is proposed for null steering using amplitude perturbations,by which Genetic Algorithm is used for optimization in the course of amplitude perturbation SO as to form the null steering with given depth in a given direction.In order to overcome the premature convergence and bad local optimal searching capability in the simple genetic algorithm(SGA),an improved niche genetic algorithm is developed in null steering.This method is effective in forming null steering with satisfactory nulls depth and acceptable sidelobe level.Simulation results show that this method has good convergence rate and good stability.Compared with other methods used for null steering,this method displays better application prospect. |
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| Keywords: | niche genetic algorithm amplitude perturbation antenna arrays null steering |
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