NASA NTRS · 19750000092
Miniature sonar fish tag
Abstract
Self-powered sonar device may be implanted in body of fish. It transmits signal that can be detected with portable tracking gear or by automatic detection-and-tracking system. Operating life of over 4000 hours may be expected. Device itself may be used almost indefinitely.
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Lovelady, R. W., Ferguson, R. L.. 1975-06-01. Miniature sonar fish tag. https://ntrs.nasa.gov/citations/19750000092
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