Radar response system
Radio frequency automatic identification system
Responder in movable-object identification system
Retrodirective interrogation responsive system
Signal discrimination system
Supervised personnel monitoring system
Surveillance and identification system antennas
Synchronized electronic identification system
Synchronized electronic identification system
System and method for initiating communications between a contro
System for identifying particular objects
System for interrogating a passive transponder carrying phase-en
Tracking system for sports
Transponder arrangement
Transponder system
Transponder system
Vehicle identification and classification systems
Vehicle identification classification and communication system