Compensating for intensity loss in a large-aperture MIMO sonar imaging system

科研成果: 期刊稿件文章同行评审

8 引用 (Scopus)

摘要

To reduce the computation burden of a large-aperture multiple-input multiple-output (MIMO) sonar imaging system, the phase-shift beamformer (PSBF) is used at the cost of bringing the intensity loss (IL). The cause of the IL is analyzed in detail and a variable termed as IL factor is defined to quantify the loss amount. To compensate for the IL, two methods termed as intensity compensation for the PSBF (IC-PSBF) and the hybrid beamforming (HBF), respectively, are proposed. The IC-PSBF uses previously estimated IL factors to compensate for output intensities of all PSBFs; and the HBF applies the IC-PSBF to the center beam region and the shifted-sideband beamformer (SSBF) to the side beam region, respectively. Numerical simulations demonstrate the effectiveness of the two proposed methods.

源语言英语
文章编号7424923
页(从-至)63-71
页数9
期刊Journal of Systems Engineering and Electronics
27
1
DOI
出版状态已出版 - 2月 2016

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