A Simple Method for Source Depth Estimation with Multi-path Time Delay in Deep Ocean
A method of source depth estimation based on the multi-path time delay difference is proposed. When the minimum time arrivals in all receiver depths are snapped to a certain time on time delay-depth plane, time delay arrivals of surface-bottom reflection and bottom-surface reflection intersect at th...
Saved in:
| Published in | Chinese physics letters Vol. 33; no. 12; pp. 86 - 90 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.12.2016
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 0256-307X 1741-3540 |
| DOI | 10.1088/0256-307X/33/12/124302 |
Cover
| Summary: | A method of source depth estimation based on the multi-path time delay difference is proposed. When the minimum time arrivals in all receiver depths are snapped to a certain time on time delay-depth plane, time delay arrivals of surface-bottom reflection and bottom-surface reflection intersect at the source depth. Two hydrophones deployed vertically with a certain interval are required at least. If the receiver depths are known, the pair of time delays can be used to estimate the source depth. With the proposed method the source depth can be estimated successfully in a moderate range in the deep ocean without complicated matched-field calculations in the simulations and experiments. |
|---|---|
| Bibliography: | Kun-De Yang1,2, qiu-Long Yang1,2, Xiao-Le Guo1,2, Ran Cao1,2 （1.Key Laboratory of Ocean Acoustics and Sensing （Ministry of Industry and Information Technology）, Northwestern Polyteehnical University, Xi＇an 710072; 2.School of Marine Science and Technology, Northwestern Polytechnical University, Xi＇an 710072） A method of source depth estimation based on the multi-path time delay difference is proposed. When the minimum time arrivals in all receiver depths are snapped to a certain time on time delay-depth plane, time delay arrivals of surface-bottom reflection and bottom-surface reflection intersect at the source depth. Two hydrophones deployed vertically with a certain interval are required at least. If the receiver depths are known, the pair of time delays can be used to estimate the source depth. With the proposed method the source depth can be estimated successfully in a moderate range in the deep ocean without complicated matched-field calculations in the simulations and experiments. 11-1959/O4 |
| ISSN: | 0256-307X 1741-3540 |
| DOI: | 10.1088/0256-307X/33/12/124302 |