Gating means for torpedo acoustic homing systems

Details Gating means for torpedo acoustic homing systems Gating means for torpedo acoustic homing systems

1958-01-13

1976-11-09

Engle, Samuel W.

Ships

Torpedoes

F42B 1906, F42B 1910, F42B 1901

Patent

active

039903788

ABSTRACT:
In a detection system for torpedoes providing a first output signal depent upon target direction relative to the torpedo wherein the target is swept at least initially the combination comprising: movable means actuated by said first output signal for providing an output function proportional to target angle from a reference and to signal-to-noise ratio and having a predetermined power spectrum during the time the target is being swept; first means actuated by said movable means for producing a varying electric signal proportional to said output function; fiter means for receiving said varying electric signal and having a fixed high pass for passing substantially only those frequencies within said power spectrum thereby to filter substantially all undesirable noise signals and amplifier means connected to said filter means for receiving the output thereof, and amplitude detector means connected to the output of said amplifier means to gate upon the reception of a pre-determined level of signal.

REFERENCES:
patent: 2166991 (1939-07-01), Guanella
patent: 2268587 (1942-01-01), Guanella
patent: 2398421 (1946-04-01), Frische et al.
patent: 2419970 (1947-05-01), Roe et al.
patent: 2423885 (1947-07-01), Hammond
patent: 2497129 (1950-02-01), Liston
patent: 2557869 (1951-06-01), Gloess
patent: 2715995 (1955-08-01), Wirkler

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