TY - JOUR
T1 - Compensating for intensity loss in a large-aperture MIMO sonar imaging system
AU - Liu, Xionghou
AU - Sun, Chao
AU - Yang, Yixin
AU - Zhuo, Jie
N1 - Publisher Copyright:
© 1990-2011 Beijing Institute of Aerospace Information.
PY - 2016/2
Y1 - 2016/2
N2 - 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.
AB - 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.
KW - multiple input multiple output (MIMO) sonar
KW - phase-shift beamformer
KW - sector-scan sonar
KW - shifted-sideband beamformer
KW - Sonar imaging
UR - http://www.scopus.com/inward/record.url?scp=84960886162&partnerID=8YFLogxK
U2 - 10.1109/JSEE.2016.00007
DO - 10.1109/JSEE.2016.00007
M3 - 文章
AN - SCOPUS:84960886162
SN - 1671-1793
VL - 27
SP - 63
EP - 71
JO - Journal of Systems Engineering and Electronics
JF - Journal of Systems Engineering and Electronics
IS - 1
M1 - 7424923
ER -