Sonar transducer calibration apparatus and method

Details Sonar transducer calibration apparatus and method Sonar transducer calibration apparatus and method

1993-12-02

1995-01-10

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Testing, monitoring, or calibrating

H04B 1700

Patent

active

053813839

ABSTRACT:
Calibration parameters such as bias, azimuth misalignment and scale factor for a velocity measuring sonar transducer are determined by mounting the transducer in a tank of water on a stationary mount. A continuous belt on a pair of rollers at the bottom of the tank simulate the ocean floor. The sonar transducer is precisely aligned with the roller mechanism at 0.degree. and can be precisely rotated by 90.degree. from the 0.degree. position. The rollers are operated in a forward and reverse direction. Distance estimates provided by the transducer, together with precise measures of the distance traveled by the simulated ocean bottom, are utilized to compute the calibration parameters.

REFERENCES:
patent: 3373842 (1968-03-01), Burbank et al.
patent: 4205394 (1980-05-01), Pickens
patent: 4576034 (1986-03-01), Ferree et al.

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