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- Title
Acoustic beam profile-based rapid underwater object detection for an imaging sonar.
- Authors
Cho, Hyeonwoo; Gu, Jeonghwe; Joe, Hangil; Yu, Son-Cheol; Asada, Akira
- Abstract
In sonar applications, the ability to locate underwater structures such as pipelines and a wreckage of submerged airplane is important. To investigate extensive sections of the seabed within a limited time period, the scanning speed and the reliability of object detection alarms are the most critical factors for finding objects. In this paper, we propose a method to provide an automatic detection alarm indicating the presence of suspected underwater objects using high-speed imaging sonar. The proposed method is based on the cross-correlations between two successive acoustic beam profiles of imaging sonar. The alarm signal alerts human operators or automatic underwater vehicles to suspected objects, which may be a part of or all of the target object. Using this signal as a trigger, the object can then be examined in more detail to determine whether it is the target. We verified the feasibility of the proposed method by indoor and field experiments.
- Subjects
UNDERWATER acoustics; SONAR imaging; RELATIVE motion; STATISTICAL correlation; AUTONOMOUS underwater vehicles
- Publication
Journal of Marine Science & Technology, 2015, Vol 20, Issue 1, p180
- ISSN
0948-4280
- Publication type
Article
- DOI
10.1007/s00773-014-0294-x