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ESTABLISHING TRACEABILITY WITH A GPS DISCIPLINED OSCILLATOR/CLOCK (GPSDO/GPSDC); A PRELIMINARY REPORT

Published

Author(s)

Andrew Novick, Michael A. Lombardi

Abstract

The metrological definition of traceability for a GPSDO or GPSDC requires an unbroken series of measurements to a national standard, with known uncertainties at each step. The calibrations must be end-to-end, including the antenna and cabling. While understanding legal definitions may be arduous at times, working with metrology labs on detailed criteria for manufacturers can be constructive. To establish the suitability of a GPSDC for traceability, we have compared the one pulse-per-second (PPS) outputs of several GPSDCs to a PPS signal from the NIST realization of Coordinated Universal Time, termed UTC(NIST). The GPSDC measurements included the use of several different antennas showing results within to tens of nanoseconds of UTC(NIST). We will explain these measurements and the estimated uncertainty of each step.
Proceedings Title
International Foundation for Telemetering ITC International Telemetering Conference 2022
Conference Dates
October 24-27, 2022
Conference Location
Glendale, AZ, US
Conference Title
2022 International Telemetering Conference

Keywords

GPS, calibration, Coordinated Universal Time, BIPM, traceability

Citation

Novick, A. and Lombardi, M. (2022), ESTABLISHING TRACEABILITY WITH A GPS DISCIPLINED OSCILLATOR/CLOCK (GPSDO/GPSDC); A PRELIMINARY REPORT, International Foundation for Telemetering ITC International Telemetering Conference 2022, Glendale, AZ, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935096 (Accessed June 25, 2024)

Issues

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

Created October 24, 2022, Updated June 6, 2024