Operational results of GPS in timekeeping
Abstract
Several investigations will become possible when the GPS constellation is in place and a common timing source is available worldwide on a nearly continuous basis. The on-board clocks will be calibrated to stay within 1 microsec of the U.S. Naval Observatory Master Clock. Monitoring of the long-term behavior of the on-board Rb and Ce clocks will permit a thorough evaluation of their performance, reliability and accuracy, as well as permit validation of the associated monitoring and calibration techniques. Additional endeavors which will be feasible, and are described, include worldwide monitoring of the timescales of, e.g., Loran-C and OMEGA systems, and experiments with signal propagation through the ionosphere.
- Publication:
-
Navigation
- Pub Date:
- 1986
- Bibcode:
- 1986Navig..33...60W
- Keywords:
-
- Chronometers;
- Global Positioning System;
- Navstar Satellites;
- Time Measurement;
- Calibrating;
- Instrument Errors;
- Ionospheric Propagation;
- Satellite-Borne Instruments;
- Space Communications, Spacecraft Communications, Command and Tracking