Abstract: The RF system for preventing hunting accidents comprising RF interrogator mounted on the firearm and RF transponder attached to hunter's coat, wherein dual-diagram microwave channel of the interrogator, which is directed along the sightline of hunter's rifle, provides alert information about “friendly targets” that could be under fire, such as other hunters or persons and animals equipped with said transponder; and if they are, the system develops alert signal: “Do not shoot”.

Abstract: Combined IR-RF combat identification friend-or-foe (IFF) system for a ground targets, such as dismounted soldiers, vehicles or military platforms comprising IR-RF interrogator mounted on a firearm and IR-RF transponder mounted on a friendly target. RF channel operates in Ka-band providing brief information about friendly targets that could be in attacked area, and if they are, develop alert signal: “Friendly soldiers are in the area”. The interrogator additionally contains RF channel receiving reflected signal that allows recognize armed foe. IR channel of the system prevents friendly fire in the case of direct sighting to a friendly soldier.