Publication Date:
2022-05-25
Description:
Originally issued as Reference No. 60-17
Description:
A pulse sonar system is described for measuring the height above the
bottom of an underwater camera and other equipment in the deep oceans.
Using this method, cameras have been positioned for photography at depths
to about 2,500 fathoms with a precision of about half a fathom. The measurement
is achieved by a sonar "pinger" on the equipment, which sends
precise 1 pulse-per- second signals to the surface both directly and by reflection
from the bottom.
Description:
Undersea Warfare Branch, Office of Naval Research
Under Contract Nonr-1367(00) (NR-261-102)
Keywords:
Cameras
;
Underwater photography
;
Sonar
Repository Name:
Woods Hole Open Access Server
Type:
Technical Report
Format:
application/pdf
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