Robust high-resolution beam-forming based on high order cross sensor processing method

作     者：Enming Zheng Xinhua Chen Huabing Yu Changyu Sun 

作者机构：Institute of Acoustics Chinese Academy of Science 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术(英文版))

年 卷 期：2015年第26卷第5期

页      面：932-940页

核心收录：

学科分类：0711[理学-系统科学] 07[理学] 080202[工学-机械电子工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0802[工学-机械工程] 

基　　金：supported by the National Natural Science Foundation of China(61372180) the Young Talent Frontier Project of Institute of Acoustics of Chinese Academy of Sciences(Y454341261) 

主　　题：cross sensor processing(CSP) beam-forming virtual element robustness high-resolution 

摘      要：In order to obtain the robust high-resolution beamforming, a high order cross sensor processing(CSP) approach is developed. According to the relation ship between the target bearing and the phase difference of each element receiving signal, this method exploits the property that the same diagonal of covariance matrix with the same phase difference and obtains(2M-1)(N-1)virtual elements(N is the original array number) by executing M order CSP. The extended virtual elements can effectively increase the physical aperture of linear array, reduce the main lobe width of beam-forming, and improve the bearing resolution. The CSP method accumulates the data on the same sub-diagonal of the covariance matrix, which can decrease the impact of background noise on beam-forming. The theoretical analysis and experimental results both show that this method has high resolution in bearing estimation, compared with the MUSIC method, which has better robustness under the lower signal-to-noise ratio(SNR).