Antiship torpedo defense system

Details Antiship torpedo defense system Antiship torpedo defense system

1979-04-09

1993-09-07

Gregory, Bernarr E.

Optics: measuring and testing

Range or remote distance finding

With photodetection

340850, 356371, 367 96, 367128, G01S 1566

Patent

active

H00012319

ABSTRACT:
The detection and localization of an antiship torpedo is accomplished by ustic and optical means. A ship's sonar determines the approximate location of the incoming torpedo and a laser scans this location with energy in the blue-green spectrum. Surface reflections are gated out of a linear detector array and reflected portions of the scanning beam which penetrate the water's surface are divided among the elements of the linear detector array into field of view element signals. These field of view element signals are subsequently compared in time and amplitude to determined disparities between them which point to the torpedo's position, depth and bearing. Optionally, spectral and polarizing filters are provided to enhance the signal to noise ratios and to facilitate signal processing.

REFERENCES:
patent: 3604803 (1971-09-01), Kahn
patent: 3775735 (1973-11-01), Funk et al.
patent: 3943870 (1976-03-01), Paslay
patent: 4105990 (1978-08-01), Rines et al.

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