A real-time direction finding device for determining the bearing to the underwater sounds of Southern Right Whales, Eubalaena australis
نویسنده
چکیده
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, Euhaiaena australis. The device measures the phase difference between the signals from a two-dimensional hydrophone array and calculates a bentring to the sound source. Results of field calibration tests demonstrated that the system could reliably directionalize on right whale sounds with a resolution of + 12' except for arrival bearings within 25' of the array's axis.
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