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

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 t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of systems engineering and electronics 2016-02, Vol.27 (1), p.63-71
Main Authors: Liu, Xionghou, Sun, Chao, Yang, Yixin, Zhuo, Jie
Format: Article
Language:English
Subjects:
Beamforming
Beams (radiation)
Cost engineering
Electronics
Imaging
Mathematical models
MIMO
MIMO (control systems)
Sonar
声纳
多输入多输出
大口径
强度损失
强度补偿
成像系统
波束形成器
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1004-4132
DOI:10.1109/JSEE.2016.00007