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基于加权稀疏约束的稳健Capon波束成形性能比较
林振, 李莉, 魏爽, 梁燕
上海师范大学 信息与机电工程学院, 上海 201418
摘要:
分析比较了几种加权稀疏约束的Capon自适应波束成形算法的性能,这些算法利用天线阵列增益的稀疏分布特性,存在抑制旁瓣,能降低干扰零陷,提高系统稳健性.通过仿真分析发现:相比于传统的Capon波束成形算法,稀疏Capon波束成形(SCCB)算法和加权稀疏Capon波束成形(WSCCB)算法的旁瓣和干扰零陷均有所降低,但是都存在着干扰零陷不准现象.
关键词:  Capon自适应波束成形  抑制旁瓣  干扰零陷
DOI:10.3969/J.ISSN.1000-5137.2020.01.004
分类号:TN911.7
基金项目:上海市自然科学基金(19ZR1437600)
Comparison of robust Capon beamforming based on weighted sparse constraints
LIN Zhen, LI Li, WEI Shuang, LIANG Yan
College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 201418, China
Abstract:
The performance of several Capon adaptive beamforming algorithms which used the weighted sparse constraints were analyzed and compared.These algorithms using the sparse distribution characteristics of the antenna array gain would suppress side lobes,reduce interference nulling and improve the system robustness.The simulation results demonstrated that the sparsity constraint Capon beamforming (SCCB)algorithm and the weight sparsity constraint Capon beamforming(WSCCB) algorithm embodied lower side lobes and interference nulling than the traditional Capon beamforming algorithm.However,there still existed inaccurate interference nulling phenomenon.
Key words:  Capon adaptive beamforming  suppression side lobes  interference nulling