TY - GEN
T1 - Modeling of Space-Time Reverberation under High-speed Vertical Gradient Motion
AU - Dong, Chao
AU - Shen, Xiaohong
AU - Yan, Yongsheng
AU - Wang, Yong
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Reverberation is the main factor affecting active sonar detection. The research of fixed position or low-speed horizontal motion ocean reverberation based on a transceiver sonar platform can not meet modern mission requirements, so reverberation under high-speed vertical gradient motion should be studied. In this paper, the geometric relationship between the transceiver sonar array and the scatterer in motion is analyzed firstly, the time-varying space-varying ocean reverberation model is established, and the equivalent plane wave reverberation level formula is derived. Based on the analysis of space-time coupling characteristics, a space-time reverberation model of an isochronous ellipsoid shell is proposed, which depends on sampling time. The mathematical expressions of the relationship between Doppler frequency shift and spatial cone angle are derived, and the space-time two-dimensional distribution curves under three different array angles are drawn, which verifies the accuracy and effectiveness of the proposed reverberation modeling method.
AB - Reverberation is the main factor affecting active sonar detection. The research of fixed position or low-speed horizontal motion ocean reverberation based on a transceiver sonar platform can not meet modern mission requirements, so reverberation under high-speed vertical gradient motion should be studied. In this paper, the geometric relationship between the transceiver sonar array and the scatterer in motion is analyzed firstly, the time-varying space-varying ocean reverberation model is established, and the equivalent plane wave reverberation level formula is derived. Based on the analysis of space-time coupling characteristics, a space-time reverberation model of an isochronous ellipsoid shell is proposed, which depends on sampling time. The mathematical expressions of the relationship between Doppler frequency shift and spatial cone angle are derived, and the space-time two-dimensional distribution curves under three different array angles are drawn, which verifies the accuracy and effectiveness of the proposed reverberation modeling method.
KW - active sonar
KW - high-speed vertical gradient
KW - model scattering cell
KW - space-time reverberation
UR - https://www.scopus.com/pages/publications/85146427965
U2 - 10.1109/ICSPCC55723.2022.9984432
DO - 10.1109/ICSPCC55723.2022.9984432
M3 - 会议稿件
AN - SCOPUS:85146427965
T3 - 2022 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2022
BT - 2022 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2022
Y2 - 25 October 2022 through 27 October 2022
ER -