A real-time direction finding device for determining the bearing to the underwater sounds of Southern Right Whales, E u b a l a e n a a u s t r a l i s
- 1 August 1980
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 68 (2) , 508-511
- https://doi.org/10.1121/1.384762
Abstract
The correlation of sounds with behavior in groups of free-ranging whales has been restricted by the difficulty of determining which animal made the sound. A real-time device was designed and built to directionalize on the underwater sounds of southern right whales, E. australis. The device measures the phase difference between the signals from a 2-dimensional hydrophone array and calculates a bearing to the sound source. The system could reliably directionalize on right whale sounds with a resolution of .+-. 12.degree. except for arrival bearings within 25.degree. of the array''s axis.Keywords
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