随机错位组合阵列分级波束旁瓣控制方法

祝 鹏; 杜金香

doi:10.11993/j.issn.2096-3920.2021.02.008

随机错位组合阵列分级波束旁瓣控制方法

doi: 10.11993/j.issn.2096-3920.2021.02.008

祝鹏,
杜金香

西北工业大学航海学院, 陕西西安, 710072

详细信息

作者简介:
祝鹏(1993-), 男, 在读硕士, 主要研究方向为阵列信号处理.

中图分类号: TJ630.34 TN820 .1
计量
- 文章访问数: 121
- HTML全文浏览量: 0
- PDF下载量: 75
- 被引次数: 0
出版历程
- 收稿日期: 2020-08-05
- 修回日期: 2020-12-03
- 刊出日期: 2021-04-30

Side Lobe Control Method in Subarray Beamforming Based on Randomly Staggered Combination Array

School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China

摘要

摘要: 为了降低水下大型声呐阵列波束形成算法的工程实现难度, 可采用阵元级分区波束扫描模式的大型平面阵列, 无需改变每个扫描分区内的阵元幅相权, 仅通过子阵级数字波束形成即可完成阵列的波束扫描。但该模式会带来高旁瓣问题。针对此, 文中提出一种基于规则子阵的随机错位组合阵列设计方法, 打破现有研究方法中错位量为整数倍阵元间距的限制, 利用遗传算法同时对子阵相邻列错位量与子阵级权系数进行联合优化, 以主旁瓣比作为适应度函数, 使得综合方向图最高旁瓣最低, 从而降低了由于子阵级大阵元间距带来的栅瓣效应。仿真结果表明, 采用随机错位的子阵结构, 优化后的阵型和权系数能够有效避免大分区下带来的高旁瓣, 在不同分区内都能获得较高的主旁瓣比, 对于旁瓣的控制效果优于现有错位组合阵列方法, 验证了随机错位组合阵列设计优化方法的有效性。
- 声呐阵列 /
- 随机错位 /
- 旁瓣控制 /
- 分区扫描 /
- 组合阵列 /
- 遗传算法
Abstract: In order to reduce the difficulty of engineering implementation of the underwater large-scale sonar array beamforming algorithm, a large planar array with element-level partitioned beam scanning mode can be adopted, without changing the weight of amplitude and phase of the array element in each scanning partition, and only the subarray-level digital beamforming is adopted, then the beam scanning of the array can be completed. However, this mode will bring high side lobe problems. To solve this problem, a new method of randomly staggered combination array based on regular subarray division is proposed, which breaks the limit of the existing research method that the offset is an integer multiple of the element spacing, and uses genetic algorithm to simultaneously optimize the offset of adjacent columns of the subarray and the subarray-level weight coefficients. The main side lobe ratio is used as the fitness function. Hence, the highest side lobe of the integrated pattern is the lowest and the grating lobe effect caused by the large element spacing at the subarray level is reduced. The simulation results show that the use of random staggered subarray structure, the optimized formation and weight coefficients can effectively avoid the high side lobe in large partitions and obtain a higher main side lobe ratio in different partitions. The control effect of the side lobes is better than that of the existing staggered combination array method, which verifies the effectiveness of the proposed method.
- sonar array /
- randomly staggered subarray /
- side lobe control /
- regional division scanning /
- combination array /
- genetic algorithm

HTML全文

参考文献(12)

[1]	熊子源. 阵列雷达最优子阵划分与处理研究[D]. 长沙: 国防科学技术大学, 2015.
[2]	程乃平, 潘点飞. 大型阵列天线子阵划分及栅瓣抑制方法[J]. 信号处理, 2014, 30(5): 535-543. Cheng Nai-ping, Pan Dian-fei. Subarray Partition Method and Grating Lobe Suppression for Large Array Antenna[J]. Journal of Signal Processing, 2014, 30(5): 535-543.
[3]	王景梅. 基于规则子阵的数字波束形成及旁瓣对消[D].西安: 西安电子科技大学, 2014.
[4]	江禹生, 周勋, 刘枫. 基于遗传算法的均匀子阵数字多波束形成研究[J]. 系统仿真技术, 2008, 4(2): 102-106. Jiang Yu-sheng, Zhou Xun, Liu Feng. Study on DBF for Multi-beam at Uniform Subarray Level Based on Genetic Algorithms[J].System Simulation Technology, 2008, 4(2): 102-106.
[5]	陈碧仙, 金荣洪, 耿军平, 等．均匀邻接子阵的栅瓣抑制[J]．上海交通大学学报, 2011, 45(3): 340-344. Chen Bi-xian, Jin Rong-hong, Geng Jun-ping, et al．Beam Scanning Uniform Subarray Scanning Regional Division Particle Swarm Optimization(PSO) Beamforming[J]. Journal of Shanghai Jiaotong University, 2011, 45(3): 340- 344．
[6]	Mailloux R. Array Grating Lobes Due to Periodic Phase, Amplitude, and Time Delay Quantization[J]. IEEE Tran- sactions on Antennas & Propagation, 1984, 32(12): 1364-1368.
[7]	丁婷, 赵拥军. 基于重叠子阵的毫米波大规模MIMO混合预编码算法[J]. 信息工程大学学报, 2019, 20(5): 5-11, 17. Ding Ting, Zhao Yong-jun. Overlapped Subarray Based Hybrid Precoding for mm Wave Massive MIMO[J]. Journal of Information Engineering University, 2019, 20(5): 5-11, 17.
[8]	娄昊, 张群, 朱丰, 等. 基于交错稀疏阵列优化的雷达-通信共享孔径方法[J]．电光与控制, 2018, 25(2): 83-87． Lou Hao, Zhang Qun, Zhu Feng, et al．Radar/Communication Antenna Aperture Sharing Based on Staggered Sparse Antenna Array Optimization[J]．Electronics Optics ＆ Control, 2018, 25(2): 83- 87．
[9]	陈建锋, 吴海. 基于子阵重叠结构的子阵划分技术研究[J]. 舰船电子对抗, 2016, 39(1): 95-98. Chen Jian-feng, Wu Hai. Research into Subarray Division Technology Based on Overlapped Subarray Architecture[J]. Shipboard Electronic Countermeasure, 2016, 39(1): 95-98.
[10]	Wang L L, Fang D G, Sheng W X. An Equivalent Over-lapping Array with Optimized Sub-Array Pattern[C]// 2002 3rd International Conference on Microwave and Millimeter Wave Technology. Beijing: IEEE, 2002.
[11]	黄飞, 盛卫星, 马晓峰．随机错位子阵阵列天线及其优化设计[J]．电波科学学报, 2008, 23(5): 917-921． Huang Fei, Sheng Wei-xing, Ma Xiao-feng．Plane Antenna Arrays with Randomly Staggered Subarrays and Its Optimal Design[J]．Chinese Journal of Radio Science, 2008, 23(5): 917-925．
[12]	杨功清, 徐振海, 董玮．错位子阵波束形成与优化设计[J]．现代雷达, 2019, 41(9): 1-3． Yang Gong-qing, Xu Zhen-hai, Dong Wei. Beamforming and Optimization Design of Displaced Subarrays[J]. Modern Radar, 2019, 41(9): 1-3．