Precise synchronization of a free-running Rubidium atomic clock with GPS Time for applications in experimental particle physics

vendredi 6 sept. 2024, 11:00 → 13:00 Europe/Paris

11:00 → 11:20 CGGTTS files: outputs of Septentrio receiver measurement

The CGGTTS files store the results of the Septentrio measurements of the time difference between the free running Rubidium clock each satellites visible during the 16 minutes epochs. This tarball contains all the CGGTTS files that have been used for this analysis.

CGGTTSFiles.tar.gz

11:20 → 11:40 Raw data

The csv file contains the data before correction.
The first two rows correspond to the counter data and the last two rows to the Septentrio data. The first and third rows correspond to the time stamp of the measurements.
The time difference between the Rubidium clock and UTC(OP) was extracted from the counter measurement. The initial offset was subtracted so that the difference is of 0 ns at the beginning of the measurement.
The time difference between the Rubidium clock and GPS Time was extracted from the CGGTTS files. The initial offset was subtracted so that the difference is of 0 ns at the beginning of the measurement.

A python script read_raw_data.py is also provided and can be used (providing the presence of the matplotlib.pyplot, lumpy, sys and csv libraries) to extract the raw data from the csv files and plot them.

raw_data.csv

read_raw_data.py