Detection system

Details Detection system Detection system

1993-12-02

1996-04-02

Eldred, J. Woodrow

Communications: directive radio wave systems and devices (e.g.,

Return signal controls radar system

Receiver

342139, 342160, G01S 1300

Patent

active

055044867

ABSTRACT:
A detection system will detect targets against a fixed background if the target is of a type emitting a gaseous plume. The detection system directs electromagnetic energy, preferably radio frequency signals, toward the fixed background in an area of suspected target activity. The detection system has a receiver which detects reflected electromagnetic energy from the fixed background. The system will identify anomalous variations in range. The variations occur as a result of refraction of the electromagnetic energy wave passing through the gaseous exhaust stream. This indicates a probable target which is creating exhaust plume.

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patent: 5093574 (1992-03-01), Pratt
patent: 5233354 (1993-08-01), Roth et al.
patent: 5247302 (1993-09-01), Hughes
patent: 5430448 (1995-07-01), Bushman

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