Accession Number : ADA313339

Title :   Acoustic Calibration Tests of the 219 Projector.

Descriptive Note : Technical memo.,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT ATLANTIC DARTMOUTH (NOVA SCOTIA)

Personal Author(s) : Heard, Garry ; Rowsome, Mark ; Chapman, Ross ; Miller, Terry

PDF Url : ADA313339

Report Date : JUN 1996

Pagination or Media Count : 17

Abstract : This report is intended to serve as an introduction to the 219 Moving Coil Projector and presents the measured response curves for the frequency range 50 - 200 Hz. Two different coil assemblies were tested and the measured response curves for both units are presented. Calibration of the projector's pressure sensor is also included to allow for accurate tow-depth determination. The projector's harmonic distortion was measured and its effect on a broadband signal presented. Finally, typical towing characteristics (tow-angle, tow-depth, and cable scope) are summarized for a nominal tow-speed of 3.5 knots.

Descriptors :   *UNDERWATER ACOUSTICS, *SONAR PROJECTORS, TEST AND EVALUATION, MONITORING, CANADA, ACOUSTIC MEASUREMENT, CALIBRATION, HYDROPHONES, ACOUSTIC EMISSIONS, ACOUSTIC DATA, SONAR TRANSDUCERS, FREQUENCY RESPONSE, ACOUSTIC DETECTORS, UNDERWATER SOUND SIGNALS.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE