Communications – electrical: acoustic wave systems and devices – Sonar counter-measures
Patent
1970-07-20
1994-03-29
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Sonar counter-measures
434 6, H04K 300
Patent
active
052991717
ABSTRACT:
A torpedo countermeasure decoy which produces and broadcasts signals that e usually more attractive to a homing torpedo than those emanating from its intended target. Timely reset staircase generators combined with timely opened and closed gates generate stairstep signals which are added by a summing amplifier to produce a programmed composite signal thereof. A bank of voltage-controlled oscillators are driven by said composite signal in such a manner as to produce a predetermined plurality of discrete frequency signals within a predetermined plurality of consecutive but separated frequency bands within a given frequency spectrum, all of which are then effectively broadcast within the aqueous medium in the ambient environment of the torpedo's intended target--that is, the vessel to be protected.
REFERENCES:
patent: 3165734 (1965-01-01), Grodzinsky et al.
patent: 3311868 (1967-03-01), Cupp et al.
Dildy, Jr. Clell A.
White Philip K.
Dobyns K. W.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
Townsend William C.
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