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
Direct acquisition of very large PN sequences in GPS systems
Direct acquistion of very large PN sequences in GPS systems
Direct integrated approach to multipath signal identification
Direct sampling GPS receiver for anti-interference operations
Direction indicating apparatus and method
Directly acquiring precision code GPS signals
Distance dependant error mitigation in real-time kinematic...