圆环形传感器阵列超指向性频率不变响应波束优化方法

Translated title of the contribution: Beampattern optimization for superdirective frequency-invariant beamforming with circular sensor arrays

Yong Wang, Yixin Yang

Research output: Contribution to journalReview articlepeer-review

2 Scopus citations

Abstract

This paper proposes a beampattern optimization method for superdirective frequency-invariant beamforming with circular sensor arrays. Firstly, the previously proposed beampattern-synthesis-based superdirective beamforming method is briefly reviewed. Since the weighting vectors at different frequencies are all expressed as analytical functions of the desired weighting vector based on the criterion of minimizing the mean square error between the desired and synthesized beampatterns, the directivity factor, the sensitivity function, and the minimum mean square error can be all formulated as functions of the desired weighting vector. Then, a multi-constraint optimization problem is proposed, which can obtain the optimal desired beampattern subject to directivity, robustness, and frequency-invariance constraints. The superdirective frequency-invariant beampatterns at other frequencies can be directly synthesized using the previously derived analytical functions. The good performance of the proposed method is demonstrated using simulations and experimental data.

Translated title of the contributionBeampattern optimization for superdirective frequency-invariant beamforming with circular sensor arrays
Original languageChinese (Traditional)
Pages (from-to)620-632
Number of pages13
JournalShengxue Xuebao/Acta Acustica
Volume43
Issue number4
StatePublished - 1 Jul 2018

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