Accession Number : ADD005340

Title :   Method and Apparatus for Determining Relative Phase and Sensitivity of Elements in an Acoustic Array.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Adair,Lyles c ; Teel,Willis A ; Werle,Christian P F ; Hutton,John A

Report Date : 16 May 1978

Pagination or Media Count : 6

Abstract : Relative phase and sensitivity characteristics of individual transducer elements in a long acoustic array are determined by sequentially positioning a transmitting element in predetermined spaced relation to each array element by means of an array holding member and a through-like spacing member that contains a known transmission medium, driving the transmitting element with a test frequency input signal that is pulsed at a predetermined repetition rate, gating the output signal from the array element under test to an oscilliscope for phase comparison with an adjustably phase shifted version of the input signal, and measuring amplitudes of both input and output signals. (Author)

Descriptors :   *Patents, *Acoustic arrays, *Transducers, Transmitting, Pulses, Phase shift, Electroacoustic transducers, Calibration, Sensitivity

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE