Safety devices
Sampled communication system
Satellite and space communications systems
Satellite command link protection system
Satellite communication system which concurrently transmits a sc
Satellite communication system with a plurality of limited scan
Satellite communication system with improved conference facility
Satellite controlled digital clock system
Satellite dual antenna pointing system
Satellite switching system
Satellite system
Satellite tracking antenna apparatus
Satellite tracking antenna system
Satellite up link diversity switch
Satellite-based vehicle position determining system
Scalloping suppression system and method
Scan pattern estimator for an electromagnetic sensor
Scan simulator for secondary radar/IFF testing
Scanning antenna with automatic beam stabilization
Scanning beam navigational beacon with transmitted coherence ref