Acoustic sub-surface interrogator

Details Acoustic sub-surface interrogator Acoustic sub-surface interrogator

1989-04-13

1990-05-08

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367 92, 367138, G01S 1500

Patent

active

049244493

ABSTRACT:
A positionable transducer array on a stationary platform proximate a layered site on the seabed coherently insonifies locations at the site with a signal having a selected power, resultant center frequency, beamwidth, bandwidth, shape and incident angle. A positionable receiver array on the platform captures the return signals. Sub-surface acoustical properties of the location are then predicted from the return signals and a calculation of the speed of sound in water at the site. Subsequent locations at the site are then interrogated and an interpolation is made of acoustical properties between locations to develop a model of the acoustical properties at the site.

REFERENCES:
Stanic et al., A High-Frequency, Shallow-Water Acoustic Measurement System, 7-1988, pp. 155-162.
Nacci et al., Correlation of Geotechnical and Acoustical Properties of Ocean Sediments, 8-24-1988, pp. 1, 2, 270-278.
Pullin et al., Techniques Applied to Obtain Very High Resolution 3-D Seismic Imaging at an Athabasca Tar Sands Thermal Pilot, 12-1987, pp. 10-16.
Fish et al., Mapping of Submerged Shipwrecks, 2-1988, pp. 10-14.

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