Accession Number : ADD011344

Title :   Directional Line-Hydrophone Array Calibrator.

Descriptive Note : Patent,


Personal Author(s) : Zalesak,J F ; Rogers,P H

Report Date : 28 Aug 1984

Pagination or Media Count : 29

Abstract : A calibrator for determining the directivity pattern and complex sensitivity 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 generator 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. (Author)

Descriptors :   *Patents, *Sonar arrays, *Hydrophones, *Calibration, Monitors, Generators, Acoustic waves, Computer applications, Phase, Amplitude, Circuits, Inventions

Subject Categories : Test Facilities, Equipment and Methods
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE