高技术通讯2012，Vol.22Issue(11)：1124-1129,6.DOI:10.3772/j.issn.1002-0470.2012.11.003
基于空间响应偏差约束的稳健宽带波束形成
Robust broadband beamforming based on the spatial response variation constraint
摘要
Abstract
To solve the problem of signals' mismatch between the actual steering vector and the presumed steering vector in broadband adaptive beamforming, a novel robust algorithm for robust broadband beamforing based on the space-time adaptive processing model is proposed by employing the spatial response variation (SRV) constraints.The frequency invariant beampattern design is provided by applying the SRV constraint in the optimization formulations.Moreover, the steering vector uncertainty set constraint and error matrix norm constraint are combined to improve the robustness of the broadband adaptive beamformer.The robust broadband beamformer design problem can be converted to the form of the minimum generalized eigenvalue of a matrix pencil, and the approximate closed-form solution to the weight vector is derived.The extensive simulation results and the complexity analysis show that the proposed algorithm can achieve the frequency invariant beampattern and improve the output signal to interference plus noise ratio (SINR) as compared with the existing robust broadband beamforming algorithms.关键词
宽带波束形成/空间响应偏差(SRV)/频率不变波束图/约束/广义特征值分解Key words
broadband beamforming, spatial response variation ( SRV) , frequency invariant beampattern, constraint, generalized eigenvalue decomposition引用本文复制引用
陈明建,罗景青..基于空间响应偏差约束的稳健宽带波束形成[J].高技术通讯,2012,22(11):1124-1129,6.基金项目
863计划(2010AA7070501J)和国家自然科学基金(61171170)资助项目. （2010AA7070501J）
