Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Statistics for quantifying aging in time transfer system delays

Published

Author(s)

Tom Parker, Roger Brown, Jeffrey Sherman

Abstract

The time delays in time transfer systems such as Two-Way Satellite Time and Frequency Transfer (TWSTFT), or GPS carrier phase (GPSCP) change over time. A double difference such as TWSTFT – GPSCP provides information on the changes in the relative time delays of the two systems. These changes are referred to as aging or time dispersion. The Time Deviation statistic (TDEV) provides information on the magnitude and nature of the random fluctuations in aging. This paper describes analytical and Monte Carlo techniques used to estimate the aging (time dispersion) from a TDEV statistic.
Citation
Metrologia

Keywords

time transfer system delays, time dispersion, aging, TDEV, ADEV

Citation

Parker, T. , Brown, R. and Sherman, J. (2023), Statistics for quantifying aging in time transfer system delays, Metrologia, [online], https://doi.org/10.1088/1681-7575/ad088b, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936907 (Accessed June 17, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created November 10, 2023, Updated June 7, 2024