APPLICATIONS OF CUMULANTS TO AWAY PROCESSING .1. APERTURE EXTENSION AND ARRAY CALIBRATION

被引：236
作者：
DOGAN, MC [1 ]
MENDEL, JM [1 ]
机构：
[1] UNIV SO CALIF,INST SIGNAL & IMAGE PROC,DEPT ELECT ENGN,LOS ANGELES,CA 90089
来源：
IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1995年 / 43卷 / 05期
关键词：
D O I：
10.1109/78.382404
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An interpretation for the use of cumulants in narrowband array processing problems is proposed, It is shown how fourth-order cumulants of multichannel observations increase the directional information compared with second-order statistics. Based on the interpretation, it is shown how cumulants can be used to increase the effective aperture of an arbitrary antenna array, The amount of partial information necessary to jointly calibrate an arbitrary array and estimate the directions of farfield sources is also investigated. It is proven that the presence of a doublet and use of fourth-order cumulants is sufficient to accomplish this task, The proposed approach is computationally efficient and more general than covariance-based algorithms that have addressed the calibration problem under constraints, A class of beamforming techniques is proposed to recover the source waveforms, Proposed estimation procedures are based on cumulants, which bring insensitivity to the spatial correlation structure of additive Gaussian measurement noise, Simulations are provided to illustrate the use of the proposed algorithms.
引用
收藏
页码：1200 / 1216
页数：17
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