Abstract:
Combined IR-RF combat identification friend-or-foe (IFF) system for the dismounted soldier comprising IR-RF interrogator mounted on a small arms and IR-RF transponder mounted on a friendly target, wherein sharp-diagram K-band RF channel provides brief information about friendly targets that could be in attacked area, and if they are, develop alert signal: “Friendly soldiers are in the area”. IR channel of the system prevents friendly fire in the case of direct sighting to a friendly soldier.
Abstract:
Simplified and insensitive to ambient condition mechanical bi-directional fiber-optic switch that can work in fire and explosion hazardous environment. The switch houses a sensitive element—a length of single-mode optic fiber and a bending device, which being activated provides specific bending of the optic fiber that introduces high attenuation of an optic signal so completely terminating light signal transmission. The switch can be configured as single on/off switch or multi-channel one.