华中科技大学学报（自然科学版）Issue(3)：89-94,6.DOI:10.13245/j.hust.150318
基于最差性能最优的稳健宽带恒定束宽波束形成
Robust wideband adaptive beamforming based on worst-case performance optimization
摘要
Abstract
A robust wideband constant beamwidth beamforming algorithm was proposed to solve the problem of performance degrade of traditional wideband beamforminers when there was look direction error existing .With the spatial response variation constraint ,a wideband constant beamwidth beam‐forming algorithm could be obtained .Then ,the equality constraint expression of the worst‐case per‐formance optimization method was derived on the boundary of constraints and the optimal weight was obtained by the Lagrange method .Finally ,the scope of the Lagrange multiplier was given .Experi‐ments and theoretical analysis illustrate that the proposed algorithm obtains a desired result against the look direction estimation error ,and achieves a preferable constant beamwidth performance and a high output signal to interference plus noise ratio .In addition ,the parameters selection of the pro‐posed algorithm is very simple .T he computational complexity is relatively low since it can avoid the generalized eigenvalue decomposition ,New ton iteration and second‐order cone programming solution in the traditional worst‐case performance optimization method .关键词
自适应/波束形成/宽带/稳健/最差性能最优/恒定束宽/空间响应变化约束Key words
self-adaptation/beamforming/wideband/robustness/worst-case performance optimiza-tion/constant beamwidth/spatial response variation constraint分类
信息技术与安全科学引用本文复制引用
刘成城,赵拥军,刘亚奇,杨静..基于最差性能最优的稳健宽带恒定束宽波束形成[J].华中科技大学学报（自然科学版）,2015,(3):89-94,6.基金项目
国家高技术研究发展计划资助项目（2011AA7031015D）． （）
