Method of remotely determining the three-dimensional velocity of

Details Method of remotely determining the three-dimensional velocity of Method of remotely determining the three-dimensional velocity of

1994-08-29

1996-05-28

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Echo systems

Speed determination

367 89, 7386125, G01S 1588

Patent

active

055218830

ABSTRACT:
A method of remotely determining the three-dimensional velocity of a fluid such as air or water, the method consisting in emitting signals of determined frequencies in at least three different directions by means of a plane array of transducers, and in using said transducers to pick up acoustic signals backscattered by the fluid, the method consisting in emitting trains of signals at different determined frequencies f1, f2, and f3, firstly in a determined direction D1, then in a determined direction D2, and finally in a determined direction D3, and subsequently in picking up all of the signals backscattered by the fluid. The invention makes it possible to improve the accuracy and to increase the maximum range of measurements.

REFERENCES:
patent: 3675191 (1972-07-01), McAllister
patent: 3742437 (1973-06-01), Thiele
patent: 3893060 (1975-07-01), Balser
patent: 4143547 (1979-03-01), Balser
patent: 4558594 (1985-12-01), Balser et al.
patent: 4870628 (1989-09-01), Zielinski

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