Time dissemination using Navstar Global Positioning System /GPS/ phase IIB user equipment
Abstract
The Phase IIB User Equipment (UE), currently under development for the Navstar Joint Program Office is presented. It is shown how the system accomplishes time dissemination and time transfer functions. Both hardware and software compensation techniques are discussed, with emphasis on the utilization and effects of the crystal oscillator based frequency standard within the UE set. The GPS Phase IIB UE can provide a degree of accuracy in time dissemination and transfer that is comparable to the portable atomic clock method, and is available as a side benefit to the basic navigation function, with standard output interfaces provided to accommodate a variety of potential users.
- Publication:
-
35th Annual Frequency Control Symposium
- Pub Date:
- 1981
- Bibcode:
- 1981afc..symp..537Y
- Keywords:
-
- Global Positioning System;
- Information Dissemination;
- Navstar Satellites;
- Time Measurement;
- Accuracy;
- Block Diagrams;
- Display Devices;
- Frequency Standards;
- Kalman Filters;
- Spread Spectrum Transmission;
- Space Communications, Spacecraft Communications, Command and Tracking