Enhancing TCVCXO Stability Using the 1 PPS Signal from the GPS

The article presents a method for enhancing the stability of TCVCXO quartz clocks by utilizing the 1 PPS signal from the GPS and high-resolution time interval counter. This method involves adjusting the oscillator's frequency through a reference voltage set by the DAC of an STM32 microcontrolle...

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Bibliographic Details
Published in:	2024 11th International Workshop on Metrology for AeroSpace (MetroAeroSpace) pp. 496 - 500
Main Authors:	Warda, Piotr, Szplet, Ryszard, Sondej, Dominik, Kwiatkowski, Pawel
Format:	Conference Proceeding
Language:	English
Published:	IEEE 03-06-2024
Subjects:	Conferences Field programmable gate arrays Global Positioning System long-term stability Metrology Microcontrollers Optimization quartz clocks TCVCXO time interval counter Voltage measurement
Online Access:	Get full text
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Summary:	The article presents a method for enhancing the stability of TCVCXO quartz clocks by utilizing the 1 PPS signal from the GPS and high-resolution time interval counter. This method involves adjusting the oscillator's frequency through a reference voltage set by the DAC of an STM32 microcontroller. The voltage value is correlated with variations in the 1PPS time segment, measured using a precision time interval counter implemented in an FPGA device. Additionally, the paper presents experimental studies of the method and offers recommendations for improving the effectiveness of the presented technique. This approach provides an advancement in the long-term stability of quartz clocks, highlighting the potential for further optimizations in time measurement technologies.
ISSN:	2575-7490
DOI:	10.1109/MetroAeroSpace61015.2024.10591545