Estimation of the stability of acoustic multipath in long-range propagation

被引：0

作者：

Miyakawa, Yutaka ^{[1
]}

Hachiya, Hiroyuki ^{[1
]}

Nakamura, Toshiaki ^{[2
]}

Nakano, Iwao ^{[2
]}

机构：

[1] Department of Information and Image Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan

[2] Japan Marine Science and Technology Center, Yokosuka 237-0061, Japan

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 2001年 / 40卷 / 5 B期

关键词：

Computerized tomography - Hydrophones - Navigation systems - Oceanography - Ray tracing - Transceivers - Underwater acoustics;

D O I：

10.1143/jjap.40.3811

中图分类号：

学科分类号：

摘要：

We present the stability estimation results of the data collected during the sound transmission experiment performed by Japan Marine Science and Technology Center (JAMSTEC) in 1996 in the western equatorial Pacific Ocean. The combined information of the amplitude and the phase was effective for identifying a ray and observing the ocean-structure change. The phases of correlated signals were very stable within 50 s not only for the paths propagated near the sound fixing and ranging (SOFAR) axis but for ones turning at about 2500 m depth. The travel time could be estimated within an error of less than 0.3 ms.

引用

页码：3811 / 3814