Two-Way Satellite Time and Frequency Transfer (TWSTFT) Calibration Constancy From Closure Sums
NAVAL OBSERVATORY WASHINGTON DC
Pagination or Media Count:
Two-way Satellite Time and Frequency Transfer TWSTFT is considered to be the most accurate means of long-distance time transfer, on the basis of its reported 1 ns repeat calibration consistency. This paper uses the closure sum technique to show that variations of the link-based component of the transfer data, in the absence of configuration changes, are largely subnanosecond in the European links. Two explanations for small, but non-zero, biases observed in the closure sums of uncalibrated data are presented.
- Test Facilities, Equipment and Methods
- Unmanned Spacecraft