DREA'S SEAHORSE ARRAY: A FREE-FLOATING, STEERABLE, RESEARCH SONAR

Authors
  1. Hines, P.C.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Defence Research Establishment Atlantic is developing a free-floating HF sonar for collecting acoustic data in the open ocean. The sonar is designed to operate in the band 20-40 kHz with a beamwidth of 0.1 steradians. Its maximum operating depth is 300 m. A 460 MHz RF command link enables the sonar to be steered to any combination of azimuth and tilt angle. This permits measurements of directional ambient noise as well as surface and bottom backscatter as a function of grazing angle. Along with control over azimuth and tilt angle, the sonar is instrumented to monitor depth, roll and vertical motion. Data transmission back to the ship is accomplished via a 2.37 GHz RF data link capable of a data transfer rate of up to 8 Mbits/sec. In the paper, the electrical, mechanical, and acoustic design of the array is presented.
Date of publication
01 Sep 1993
Number of Pages
7
DSTKIM No
94-00876
CANDIS No
136990
Format(s):
Hardcopy;Originator's fiche received by DSIS

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