电光与控制, 2019, 26 (12): 39, 网络出版: 2021-02-02  

基于改进差分进化算法的时间调制阵列多波束优化形成

An Optimized Multi-beam Forming Method of Time-Modulated Array Based on Improved Differential Evolution Algorithm
作者单位
江苏科技大学, 江苏 镇江 212000
摘要
提出了一种基于时间调制阵列的数字多波束形成方法。时间调制阵列会产生基波分量和各次谐波分量, 通过调整各个单元的控制时序, 实现谐波分量的幅度和相位综合, 可以在正负第一次谐波处实现期望方向的波束形成。同时采用改进差分进化算法来优化控制时序, 进一步降低最大旁瓣电平, 实现两个指向不同的数字波束的设计。最后通过与时间调制阵列波束形成和基于基本差分进化算法的时间调制阵列波束形成对比, 验证了该算法在数字多波束形成中的可行性和有效性。
Abstract
A digital multi-beam forming method based on time modulation array is proposed. The time modulation array will generate fundamental component and each sub-harmonic component. By adjusting the sequence control of each unit, the amplitude-phase synthesis of the harmonic component is realized, and the beam forming in the desired direction is realized at the the first positive and negative sub-harmonic wave. The improved differential evolution algorithm is used to optimize the sequence control, further reduce the maximum sidelobe level, and realize the design of two digital beams of different directions. The feasibility and effectiveness of the proposed algorithm in digital multi-beam forming are verified by comparison with the time-modulated array beam-forming method and the time-modulated array beam-forming method based on basic differential evolution algorithm.

孙丽娟, 张贞凯, 刘新星. 基于改进差分进化算法的时间调制阵列多波束优化形成[J]. 电光与控制, 2019, 26(12): 39. SUN Lijuan, ZHANG Zhenkai, LIU Xinxing. An Optimized Multi-beam Forming Method of Time-Modulated Array Based on Improved Differential Evolution Algorithm[J]. Electronics Optics & Control, 2019, 26(12): 39.

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