Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Department of Electrical and Computer Engineering, Portland State University, Portland, Oregon 97201, USA.
JASA Express Lett. 2021 Sep;1(9):096001. doi: 10.1121/10.0006390.
This paper derives travel times and arrival angles of head-wave correlations from ocean ambient noise in shallow water over a layered seabed. The upcoming and surface reflected head-wave noise signal received at two receivers from the same interface are correlated, and their travel time differences give the travel times of the head-wave correlations. The arrival angle of head-wave correlations from an interface depends on sound speeds in the layers above and just below. The predictions of head-wave correlations from a seabed with two layers and the corresponding inversion results are verified with simulations.
本文从浅海分层海底的海洋环境噪声中推导出首波相关的走时和到达角。从同一界面接收的两个接收器接收到的即将到来的和表面反射的首波噪声信号进行相关，它们的走时差给出了首波相关的走时。来自界面的首波相关的到达角取决于上层和下层的声速。使用两层海底的首波相关预测和相应的反演结果进行了验证。
