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光波导光学相控阵边瓣压缩方法研究

Method of Sidelobe Suppression with Waveguide Optical Phased Array

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摘要

针对光波导光学相控阵的光束优化问题,提出了一种基于遗传算法的幅值和相位混合加权的边瓣优化方法。以一维线阵为例,对混合加权的实现方法进行了分析,并在此基础上对提出的遗传优化算法进行仿真实验。仿真结果表明:优化后的天线方向图将栅瓣压缩为副瓣,同时峰值副瓣电平得到了明显改善;优化搜索过程中有、无主瓣均能达到压缩边瓣的目的。该算法具有良好的收敛性能,采用该算法对方向图进行优化设计,能够有效提高设计的效率和质量,在方向图综合中具有非常好的实际工程应用性。

Abstract

Aiming at the beam optimization problem of waveguide optical phased array, we propose a sidelobe optimization method with mixed weighting of amplitude and phase based on genetic algorithm. Taking one-dimensional linear array as an example, we analyze the implementation method of mixed weighting. On the basis of the analysis, the MATLAB simulation in computer is carried out for the proposed genetic optimization algorithm. The simulation analysis shows that the optimized antenna pattern compresses the grating-lobe to the sidelobe. Meanwhile, the peak sidelobe level is greatly ameliorated. We perform a comparative analysis of whether the main lobe is included in the optimized search process, the optimized simulation results show that both of them can achieve the purpose of compressing the sidelobe. This algorithm has good convergent performance and can improve the efficiency and quality of the design by optimizing the design of the direction diagram. It has very good practical engineering applications in the direction diagram synthesis.

Newport宣传-MKS新实验室计划
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中图分类号:TN252

DOI:10.3788/lop55.082301

所属栏目:光学器件

收稿日期:2017-12-28

修改稿日期:2018-01-25

网络出版日期:2018-01-28

作者单位    点击查看

彭丽华:长春理工大学电子信息工程学院, 吉林 长春 130022
李明秋:长春理工大学电子信息工程学院, 吉林 长春 130022
黄志伟:长春理工大学电子信息工程学院, 吉林 长春 130022
史红伟:长春理工大学电子信息工程学院, 吉林 长春 130022

联系人作者:史红伟(qitiand@qq.com); 彭丽华(15714307299@163.com); 李明秋(2314836044@qq.com);

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引用该论文

Peng Lihua,Li Mingqiu,Huang Zhiwei,Shi Hongwei. Method of Sidelobe Suppression with Waveguide Optical Phased Array[J]. Laser & Optoelectronics Progress, 2018, 55(8): 082301

彭丽华,李明秋,黄志伟,史红伟. 光波导光学相控阵边瓣压缩方法研究[J]. 激光与光电子学进展, 2018, 55(8): 082301

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