Title :
Frequency scales generated from carrier-phase GPS data
Author :
Senior, Ken ; Matsakis, Demetrios ; Breakiron, Lee
Author_Institution :
US Naval Obs., Washington, DC, USA
Abstract :
The calibrated carrier-phase GPS technique promises time transfer between remote sites with 5-minute precision approaching 20 ps. Uncalibrated time transfers between many sites are routinely made available by the Earth Orientation Department of the U.S. Naval Observatory (USNO). Although important technical issues involving long-term accuracy and calibration are still being resolved, it is possible to generate sample time and frequency scales so as to anticipate the full power of the technique. Using minor extensions of the USNO´s postprocessed extended-Percival algorithm SuperP (1998), a carrier-phase-based frequency scale is generated and compared to local USNO timescales
Keywords :
Global Positioning System; calibration; frequency standards; time measurement; timing; transfer standards; 20 ps; 20 ps precision; Earth Orientation Department; SuperP; U.S. Naval Observatory; calibration; carrier-phase GPS data; carrier-phase-based frequency scale; extended-Percival algorithm; frequency scale; frequency standard; local USNO timescales; long-term accuracy; remote sites; sample time; time transfer; Calibration; Clocks; Data analysis; Earth; Frequency estimation; Frequency synchronization; Global Positioning System; Observatories; Power generation; Timing;
Conference_Titel :
Frequency Control Symposium and Exhibition, 2000. Proceedings of the 2000 IEEE/EIA International
Conference_Location :
Kansas City, MO
Print_ISBN :
0-7803-5838-4
DOI :
10.1109/FREQ.2000.887427
