The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1992
Filed:
Feb. 14, 1990
Giulio Brogi, Rome, IT;
Sistel Sistemi Elettronici S.p.A., Orme, IT;
Abstract
Infrared proximity fuze, obtained by joining two infrared IR proximity sensors, preferably of the open field type, which have different fields of view (F.O.V.) so that the target sources presence signal is given by the simultaneous presence of an alarm signal coming from the greater field of view sensor and a time gate generated by an alarm signal coming from the lessor F.O.V. sensor. Given the carrier-to-target movement characteristics and the aperture of the two fields of view it is possible to electronically generate a time gate which rejects false targets (fires, flares, etc.) placed at considerable distances from the line of sight. The system is intrinsically protected against the effects of solar radiation combined with the nutation and precession movements of the carrier because it requires simultaneous signal presence within both fields of view. The open field fuze signal processor checks for the simultaneous presence of a positive IR signal and of a negative rate of change of the IR signal, both characteristic of an emitter coming out of the sensor F.O.V.