Accession Number : ADD000727

Title :   Hydrophone Line Array Calibration Unit.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Percy,Joseph L

Report Date : 07 Jan 1975

Pagination or Media Count : 6

Abstract : The patent relates to an elongate hydrophone array simultaneously calibrated to ensure the monitoring of accurate, meaningful readings when the invention is subsequently deployed. A cylindrically-shaped wire-mesh framework serves as a support for the array and a number of tie lines secure the array on the framework in a helically extending relationship. A coaxially disposed projector of acoustic energy ensonifies the helically coiled hydrophone array and an adjacent reference hydrophone. The reference hydrophone and the hydrophone array are coupled to monitoring circuits which provide a relationship of the reference signals and the array signals to allow a calibration of the array.

Descriptors :   *Acoustic arrays, *Calibration, *Patents, Hydrophones, Monitors

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE