TY - JOUR
T1 - Target detection method of the narrow-band continuous-wave active sonar based on basis-group beamspace-domain nonnegative matrix factorization for a reverberant environment
AU - Lee, Seokjin
N1 - Publisher Copyright:
© 2019 Acoustical Society of Korea. All rights reserved.
PY - 2019
Y1 - 2019
N2 - The proposed algorithm deals with a detection problem of target echo for narrow-band continuous-wave active sonar in the underwater environment in this paper. In the active sonar systems, ping signal emitted for target detection produces a signal that consists of multiple reflections by many scatterers around, which is called reverberation. The proposed algorithm aims to detect the low-Doppler target echo in the reverberant environment. The proposed algorithm estimates the bearing, frequency, and temporal bases based on beamspace-domain multichannel nonnegative matrix factorization. In particular, the bases are divided into two basis groups – the reverberation group and the echo group, then the basis groups are estimated independently. In order to evaluate the proposed algorithm, a simulation with synthesized reverberation was performed. The results show that the proposed algorithm has enhanced performance than the conventional algorithms.
AB - The proposed algorithm deals with a detection problem of target echo for narrow-band continuous-wave active sonar in the underwater environment in this paper. In the active sonar systems, ping signal emitted for target detection produces a signal that consists of multiple reflections by many scatterers around, which is called reverberation. The proposed algorithm aims to detect the low-Doppler target echo in the reverberant environment. The proposed algorithm estimates the bearing, frequency, and temporal bases based on beamspace-domain multichannel nonnegative matrix factorization. In particular, the bases are divided into two basis groups – the reverberation group and the echo group, then the basis groups are estimated independently. In order to evaluate the proposed algorithm, a simulation with synthesized reverberation was performed. The results show that the proposed algorithm has enhanced performance than the conventional algorithms.
KW - Active sonar
KW - Continuous-wave
KW - Multichannel nonnegative matrix factorization
KW - Reverberation
KW - Target detection
UR - http://www.scopus.com/inward/record.url?scp=85079188352&partnerID=8YFLogxK
U2 - 10.7776/ASK.2019.38.3.290
DO - 10.7776/ASK.2019.38.3.290
M3 - Article
AN - SCOPUS:85079188352
SN - 1225-4428
VL - 38
SP - 290
EP - 301
JO - Journal of the Acoustical Society of Korea
JF - Journal of the Acoustical Society of Korea
IS - 3
ER -