Dual field-of-view optical target detector

Details Dual field-of-view optical target detector Dual field-of-view optical target detector

1983-07-07

1985-08-06

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

F42C 1302

Patent

active

045328676

ABSTRACT:
Dual field-of-view detection allows reflected energy from a target to be eived in one detector and extraneous reflected energy adjacent to the target area to be simultaneously detected in a separate detector. Comparison of the desired signal with a threshold level and with the detected extraneous energy level allows superior false alarm rejection while improving sensitivity by allowing reduced threshold levels for the true target. This dual detection in a single receiver allows the receiver to have two separate but immediately adjacent fields-of-view which interact with a transmitted beam to form a pair of adjacent sensing zones. A vehicle such as a missile equipped with this detection system can pass in close proximity to a target and distinguish a true target passing through the established sensing zone from extraneous background signals.

REFERENCES:
patent: 2137598 (1938-11-01), Vos
patent: 3786757 (1974-01-01), Goldstein et al.
patent: 3946674 (1976-03-01), Pettersson et al.
patent: 4098191 (1978-07-01), Bagwell et al.

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