System for measurement of the acoustic coefficient of reflection

Details System for measurement of the acoustic coefficient of reflection System for measurement of the acoustic coefficient of reflection

1986-08-29

1989-01-03

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

367901, 73170A, G01S 966, G01W 100

Patent

active

047962380

ABSTRACT:
System to measure the coefficients of reflection of submerged surfaces such as the seabed, by comparison of the intensities of acoustic impulses propagated between a source and a receptor, both of which are submerged, and that of the echoes of these impulses on the reflectors. For this purpose, there is provided a programmed calculator, an interface card to communicate with different units: an echo-sounder, a source triggering detector, a shot box to control the source and a recorder, a programmable attenuator, an acquisition card driven by the calculator and bearing an adjustable type filter and a circuit, also controlled by the calculator, for modifying the functioning parameters of the attenuation and of the filter, and fixing the starting parameters.

REFERENCES:
patent: 2480561 (1949-08-01), Ewing et al.
patent: 3174128 (1965-03-01), Don et al.
patent: 3555499 (1971-01-01), MacDonald et al.
patent: 4216537 (1980-08-01), Delignieres
patent: 4225954 (1980-09-01), Medwin

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