信息工程大学学报2025，Vol.26Issue(6)：639-645,7.DOI:10.3969/j.issn.1671-0673.2025.06.002
面向相干环境的均匀圆阵稳健自适应波束形成方法
Robust Adaptive Beamforming Method for Uniform Circular Arrays in Coherent Environments
摘要
Abstract
To address the performance degradation of adaptive beamforming algorithms for uniform cir-cular arrays(UCA)in multipath coherent environments,a robust adaptive beamforming algorithm with high array gain is proposed.Firstly,the UCA is transformed into a virtual uniform linear array(VULA)through modal domain transformation,followed by a spatial smoothing technique to achieve decorrela-tion.Secondly,the interference steering vector is estimated using the minimum power projection method,while the steering vector of the signal of interest(SOI)is obtained via a convex optimization ap-proach that maximizes the output power.Then,the powers of the interference and noise are estimated using the orthogonality of subspace eigenvectors.Finally,the interference-plus-noise covariance matrix(INCM)is reconstructed based on the estimated parameters,and the beamforming weight vector is com-puted accordingly.Theoretical analysis and simulation results demonstrate that the proposed algorithm achieves favorable output SINR under various SNR conditions,verifying its effectiveness.Furthermore,its robust performance under different model mismatch scenarios confirms the algorithm's robustness.关键词
相干信号/模式空间变换/稳健自适应波束形成/干扰加噪声协方差矩阵/均匀圆阵Key words
coherent signals/mode space transformation/robust adaptive beamforming/interfer-ence-plus-noise covariance matrix/uniform circular arrays(UCA)分类
信息技术与安全科学引用本文复制引用
TIAN Guolin,QU Jian,CUI Weijia,BA Bin..面向相干环境的均匀圆阵稳健自适应波束形成方法[J].信息工程大学学报,2025,26(6):639-645,7.基金项目
国家自然科学基金(62171468) （62171468）
