Environmental effects on errors in two-way time transfer

Author

Ascarrunz, F.G. ; Jefferts, S.R. ; Parker, T.E.

Author_Institution

Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA

fYear

1996

fDate

17-21 June 1996

Firstpage

518

Lastpage

519

Abstract

We have investigated errors in two-way time transfer due to environmental fluctuations in temperature and power levels. The overall temperature coefficient of two Earth stations at the National Institute of Standards and Technology (NIST) have been found to be on the order of 100 pS/K Sub-component temperature coefficients are as high as 400 pS/K. The errors in two-way time transfer due to variations in power levels have been measured to be as large as 12 nS. These errors are due to distortion in the pn sequence due to gain compression in the earth-station.

Keywords

clocks; measurement errors; measurement standards; satellite telemetry; time measurement; 12 ns; Earth stations; NIST; clock comparisons; environmental effects; gain compression; measurement errors; overall temperature coefficient; pn sequence; power level fluctuations; sub-component temperature coefficients; synchronisation; temperature fluctuations; time measurement; two-way time transfer; Clocks; Delay effects; Fluctuations; Frequency; Modems; NIST; Satellite ground stations; Temperature dependence; Temperature sensors; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 1996 Conference on

Conference_Location

Braunschweig, Germany

Print_ISBN

0-7803-3376-4

Type

conf

DOI

10.1109/CPEM.1996.547327

Filename

547327