Method and apparatus for determining relative phase and sensitiv

Details Method and apparatus for determining relative phase and sensitiv Method and apparatus for determining relative phase and sensitiv

1977-03-25

1978-05-16

Farley, Richard A.

Communications: electrical

Selective

Intelligence comparison for controlling

73 1DV, H04B 1100, H04R 2900

Patent

active

040901696

ABSTRACT:
Relative phase and sensitivity characteristics of individual transducer eents 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 trough-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.

REFERENCES:
patent: 3393400 (1968-07-01), Trott

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