【作者】 郝爽； 宋扬； 邢传玺；

【Author】 HAO Shuang;SONG Yang;XING Chuan-xi;Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University;College of Underwater Acoustic Engineering,Harbin Engineering University;School of Electrical and Information Engineering,Yunnan Minzu University;

【机构】 哈尔滨工程大学水声技术重点实验室； 哈尔滨工程大学水声工程学院； 云南民族大学电气信息工程学院；

【摘要】 海洋声层析(OAT)通过测量双向声信号传播时间来实现对海流的观测。它可以不受航运和渔业活动等的限制,实现大面积、长期、连续的实时监测。目前海洋声层析已应用于多个海域的实验研究。本文介绍一种基于射线理论的海洋声层析方法。根据射线的仿真结果,利用射线的传播时间差来构建海流的垂直剖面。仿真结果表明,反演的流速与预设的流速值基本吻合,此方法能够较准确的反演分层海流的流速。更多还原

【Abstract】 Ocean acoustic tomography(OAT) is used to observe currents through measuring travel times of reciprocal acoustic signal. The OAT is proposed as a technology to make extensive long-term, and consecutive real-time monitoring of currents because the systems are not influenced by the activities of shipping and fishing. It has been applied to the researches of many sea areas. In this paper, a method is introduced which is based on the eigenray theory. Based on the result of ray simulation, the differential travel times from these rays are used to reconstruct the vertical profiles of currents. The inversion results are compared with the simulated current data, and the effective of this method is proved.更多还原