Accession Number : AD0867324

Title :   Acoustic Transient Signal Study. Transient Generator Research Report.

Descriptive Note : Rept. for Jan-Dec 69,

Corporate Author : EDO CORP COLLEGE POINT NY

Personal Author(s) : Bernstein, Julius

Report Date : 03 APR 1970

Pagination or Media Count : 32

Abstract : The current approach in CW Sonar Systems results in systems of increasing size, weight, power requirement, manning, decreased security with increasing reverberation and cavitation limitations. A new approach is proposed-a sonar system employing high energy, short duration, positive pressure pulses named CIG (Controlled transient Impulse Generator system). An analytically determined step function waveform train was electronically synthesized and used to drive electrostrictive transducers. A number of these developed transient acoustic signals in water having 4 to 1 positive to negative amplitude excursion of the first impulse cycle. Subsequent amplitude limitation of 1 to 1 for succeeding cycles, was maintained. The acoustically developed transient compares favorably with the well known IMP generated impulse whose positive-to-negative excursions are 5 to 1. (Author)

Descriptors :   (*SONAR PULSES, SONAR PROJECTORS), PIEZOELECTRIC TRANSDUCERS, TRANSIENTS.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE