Sonar countermeasure

Details Sonar countermeasure Sonar countermeasure

1962-12-28

1993-10-12

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Sonar counter-measures

H04K 300

Patent

active

052532160

ABSTRACT:
A countermeasure for acoustic homing torpedoes where a plurality of sound ansducers are transversely arrayed across the attack path of the torpedo. The transducers are energized in a time sequence to simulate a relative transducer movement in a direction across the path of the torpedo. The torpedo is thereby misdirected by the high level acoustic signal produced in the transducers slowly changing the location of the signal. The signal is interrupted to provide a silent period, such absence of a signal being interpreted by the torpedo as a miss causing the torpedo to initiate a turn and commence a search which will "exhaust" the torpedo. This sequence is repeated while the torpedo is within a close range of the target.

REFERENCES:
patent: 2540035 (1951-01-01), Rodman
patent: 2972732 (1961-02-01), Hammond, Jr.
patent: 2975396 (1961-03-01), Mueller
patent: 3113286 (1963-12-01), Miller et al.

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