Differential global positioning system using radio data system
Differential GPS for fleet base stations with vector processing
Differential GPS ground station system
Differential GPS receiver system linked by infrared signals
Differential GPS smart antenna device
Differential navigation system for remote mobile users
Differential phase measurement scheme for a multiplexing GPS att
Differential phase measurement through antenna multiplexing
Differential position determination using satellites
Differential satellite positioning system ground station with in
Digital bandwidth compression for optimum tracking in satellite
Digital beacon asymmetry and quantization compensation
Digital circuit for correcting phase shift of digital signal
Digital correlator for a receptor of signals from satellite...
Digital multimedia navigation player/recorder
Digital NAVSTAR receiver
Digital range turn-around for tracking, telemetry and control tr
Digital spacecraft antenna tracking system
Digital system for codeless phase measurement
Digitally controlled beam former for a spacecraft