电波科学学报2016，Vol.31Issue(6)：1093-1098,6.DOI:10.13443/j.cjors.2016102101
基于Bessel权向量的宽带波束形成器
Algorithm of broadband beamformer based on Bessel function
摘要
Abstract
We present a novel broadband beamformer using a Bessel function based weight vector,aiming at solving the pattern distortion of wideband signals received by a uniform linear array.Owing to the similarity of the Bessel series and the pattern function of the uniform linear array,we design an weight vector based on Bessel functions of the first kind by deducing the relationship between the truncated position of Bessel series and the number of array elements.Simulation results show that the uniform linear array with a proper weight vector can receive wideband signal from 1 to 3 GHz with negligible distortions.The relative amplitude error for pattern functions at different frequencies remains below 10-3,and it can be further reduced by increasing the number of the array elements.In comparison with the existing methods,our proposed broadband beamformer directly uses the coefficients of the truncated Bessel series expansions as the weight vector,possesses high precision,and reduces the computational complexity significantly.关键词
宽带信号/方向图畸变/Bessel权向量/波束形成器/均匀线阵Key words
broadband signal/pattern distortion/Bessel weights/beamformer/uniform linear array分类
信息技术与安全科学引用本文复制引用
钱扬,耿军平,梁仙灵,朱卫仁,姚羽,彭政,金荣洪..基于Bessel权向量的宽带波束形成器[J].电波科学学报,2016,31(6):1093-1098,6.基金项目
国家自然科学基金(61571289,6157129,61471240) （61571289,6157129,61471240）
