TY - GEN
T1 - Localization of underwater tone noise sources by a small aperture circular array
AU - Xu, Lingji
AU - Yang, Yixin
AU - Wang, Yongwei
AU - Yang, Hu
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/9/17
Y1 - 2015/9/17
N2 - Based on the joint information of space-time-frequency, a novel scheme is proposed for localizing the low-frequency tone noise sources of an underwater moving vehicle by using a small aperture circular array. First, the Doppler signals formed when the noise sources pass through the closest point of approach (CPA), are separated in time domain with superdirectivity beamforming. Thereafter, processing the LFM signals output from the narrow beam by pseudo Wigner-Ville distribution, the CPA times of the tone noise sources are estimated from time-frequency images of the noise signals. Finally, conversing time coordinate to space and using a reference source, the position of each low-frequency tone noise source on the underwater vehicle is identified. This scheme can be applied to the coherent acoustic sources. Simulation results validated the proposed scheme.
AB - Based on the joint information of space-time-frequency, a novel scheme is proposed for localizing the low-frequency tone noise sources of an underwater moving vehicle by using a small aperture circular array. First, the Doppler signals formed when the noise sources pass through the closest point of approach (CPA), are separated in time domain with superdirectivity beamforming. Thereafter, processing the LFM signals output from the narrow beam by pseudo Wigner-Ville distribution, the CPA times of the tone noise sources are estimated from time-frequency images of the noise signals. Finally, conversing time coordinate to space and using a reference source, the position of each low-frequency tone noise source on the underwater vehicle is identified. This scheme can be applied to the coherent acoustic sources. Simulation results validated the proposed scheme.
KW - Doppler effect
KW - localization of noise sources
KW - superdirectivity beamforming
KW - time-frequency analysis
KW - underwater vehicle
UR - http://www.scopus.com/inward/record.url?scp=84957609143&partnerID=8YFLogxK
U2 - 10.1109/OCEANS-Genova.2015.7271707
DO - 10.1109/OCEANS-Genova.2015.7271707
M3 - 会议稿件
AN - SCOPUS:84957609143
T3 - MTS/IEEE OCEANS 2015 - Genova: Discovering Sustainable Ocean Energy for a New World
BT - MTS/IEEE OCEANS 2015 - Genova
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - MTS/IEEE OCEANS 2015 - Genova
Y2 - 18 May 2015 through 21 May 2015
ER -
