Method and system for depth sounding

Details Method and system for depth sounding Method and system for depth sounding

1987-03-05

1988-10-04

Steinberger, Brian S.

Acoustics

Echo system

Altitude or depth detection

181109, 367 99, G01V 100, G01S 1500

Patent

active

047750286

ABSTRACT:
A method and apparatus for the sounding of waters, particularly suitable for depth (and the like) sounding of Arctic waters, comprises shooting an energetic projectile at the water or ice surface from, say, a helicopter which has suspended close to the waters surface a suitably housed microphone for receiving the echo energizing from the waters. By measuring elapsed time between firing of the projectile and reception of the echo, and knowing all distances except the depth of the reflecting boundary (be it the bottom or a submarine), the unknown depth is easily determined.

REFERENCES:
patent: 1630689 (1927-05-01), Behm
patent: 4139074 (1979-02-01), White
patent: 4242740 (1980-12-01), Muehle
Hickman et al., Laser Acoustic Measurements for Remotely Determining Bathymetry in Shallow Turbid Waters, Applied Science Tech., 11/82, pp. 1-4.
Caron, Albert B., Surface Impact Location System, Conference Proceedings of Ocean '72, International Conference on Engineering in Ocean Env., Newport, R.I., USA, pp. 462-467 (Sep. 13-15, 1972).

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