均匀直线阵下通用信号模型稳健波束形成算法

doi:10.3969/j.issn.1001-2400.2014.05.028

Abstract

Abstract:

For the robust adaptive beamforming problem of incoherently scattered signals,a robust beamforming algorithm for general signal models based on the uniform linear array (ULA) is proposed. By introducing the conjugate data rearrangement method, two transformation matrices are defined to reconstruct the signal covariance matrices. Based on the new signal covariance matrices, the proposed algorithm gives a real valued close-form solution for the optimum weight vector to reduce the computational complexity. Then, the influences of the Signal-Noise-Ratio, snapshots, look direction errors and mismatch constraint parameters on the output Signal-Interference-Noise-Ratio are discussed in detail. The conjugate data is rearranged and reused in the new covariance matrix,so that the performance is obviously improved under the conditions of a limited number of snapshots, the severe signal mismatch and so on. Simulations illustrate the effectiveness of the proposed method.

Key words: beamforming, uniform linear array, general signal models, conjugate data rearrangement

CLC Number:

TN911.7

LIU Chengcheng;DING Yongchao;ZHAO Yongjun;YANG Jing2. Robust beamforming algorithm for general signal models based on the ULA[J].J4, 2014, 41(5): 166-172.

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Robust beamforming algorithm for general signal models based on the ULA

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