中国电子科技2007，Vol.5Issue(2)：175-179,5.
On Broadband Adaptive Beamforming in the Presence of Correlated Interferences
On Broadband Adaptive Beamforming in the Presence of Correlated Interferences
摘要
Abstract
A novel approach of unitarily interpolated array MVDR (UIA-MVDR) is proposed, aiming at avoiding the signal cancellation caused by broadband signal-correlated interferences. UIA-MVDR belongs to the classic approaches of spectral averaging. However, it is distinguished from the conventional interpolated array MVDR (IA-MVDR) by two points: 1) It imposes a unitary constraint on the transform matrices. 2) It only optimizes the worst-case performance of array manifold approximation. As a result, the restriction on the order of Bessel function expansion is released, so that very accurate approximation can be achieved even in the case of small or middle arrays. Compared with many related approaches, UIA-MVDR destroys the correlation more completely and then achieves better performance. Its excellent performance in both correlated and uncorrelated broadband interferences suppression is confirmed via a number of numerical examples.关键词
Broadband adaptive beamforming/correlated interferences/spectral averaging/unitary constraint/worst-case performance optimizationKey words
Broadband adaptive beamforming/correlated interferences/spectral averaging/unitary constraint/worst-case performance optimization引用本文复制引用
Jing-Ran Lin,Qi-Cong Peng,Huai-Zong Shao,Tai-Liang Ju..On Broadband Adaptive Beamforming in the Presence of Correlated Interferences[J].中国电子科技,2007,5(2):175-179,5.基金项目
This work was supported by the Science and Technology Foundation of Sichuan Province under Grand No. 04GG21-020-02. （）
