Title :
Uncertainty evaluation of GPS common-view time transfer and frequency stability measurements
Author :
Zhongning Dai ; Chua, H.A. ; Neo, H.
Author_Institution :
Singapore Productivity & Stand. Board, Singapore
Abstract :
An experiment was carried out to determine the uncertainty of GPS common-view time transfers. The receivers operated on different tracking schedules for some satellites. We found that standard deviation of about 20 ns was attainable even when there were several minutes difference in tracking schedule for some satellites. A system developed for characterizing long- and short-term frequency stability of atomic clocks is also described. Measurement uncertainties of the system were also evaluated to establish traceability to UTC.
Keywords :
Atomic clocks; Frequency stability; Global Positioning System; Measurement uncertainty; Synchronization; GPS common-view time transfer; atomic clocks; different tracking schedule; frequency stability measurements; long-term frequency stability; phase comparison; remote characterisation; short-term frequency stability; standard deviation; traceability to UTC; uncertainty evaluation; Atomic clocks; Atomic measurements; Frequency measurement; Global Positioning System; Measurement uncertainty; Oscillators; Phase measurement; Satellites; Stability; Time measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850882
