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Environmental Effects and Control Systems for GPS Disciplined Clocks (GPSDC)

Published

Author(s)

Andrew Novick, Demetrios Matsakis, John Clark

Abstract

GPSDCs are sensitive to their environment in many ways, and the susceptibility varies with different GPSDC designs. In the short term, temperature shocks can perturb the frequency of the disciplined local oscillator, causing shifts in the time output. Assuming the GPS receiver module is not separately impacted, GPSDC will return to its steady-state time and frequency setpoint at least until the next environmental shock. We have tested three commercially available GPSDCs with varying results. Performance of these devices in various conditions will be described along with mitigation strategies, including variance of the control loop parameters.
Proceedings Title
Proceedings of the Joint Conference of the IEEE International Frequency Control Symposium and the European Frequency and Time Forum 2023
Conference Dates
May 16-19, 2023
Conference Location
Toyama, JP
Conference Title
Joint Conference of the IEEE International Frequency Control Symposium and the European Frequency and Time Forum

Keywords

time, GPS, metrology, GPSDC, temperature

Citation

Novick, A. , Matsakis, D. and Clark, J. (2023), Environmental Effects and Control Systems for GPS Disciplined Clocks (GPSDC), Proceedings of the Joint Conference of the IEEE International Frequency Control Symposium and the European Frequency and Time Forum 2023, Toyama, JP, [online], https://doi.org/10.1109/EFTF/IFCS57587.2023.10272190, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936909 (Accessed June 25, 2024)

Issues

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Created May 15, 2023, Updated June 7, 2024