Directional line-hydrophone array calibrator

Details Directional line-hydrophone array calibrator Directional line-hydrophone array calibrator

1982-06-29

1984-08-28

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Testing, monitoring, or calibrating

73 1DV, H04R 2900

Patent

active

044687605

ABSTRACT:
A calibrator for determining the directivity pattern and complex sensitiv of a line hydrophone array including a calibration chamber, filled with a selected fluid, for sealing the array therein. Projectors, for generating acoustic waves, and monitors, for measuring the amplitude and phase of acoustic waves incident thereon, are mounted within the chamber. The projectors and monitors are connected to a computerized control circuit that drives the projectors to generate a calibration wave, with a predetermined amplitude and phase relative to the center of the array, corresponding to a free plane wave incident at an angle .theta. to the axis of the chamber.

REFERENCES:
patent: 3859620 (1975-01-01), Percy
patent: 3864664 (1975-02-01), Trott et al.
patent: 4205394 (1980-05-01), Pickens

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