Noise reduction processing of atomic clock differential measurement data based on low-pass filter and its performance analysis

When measuring the time difference between pulse signals, some uncertainty is introduced. Directly using the raw data for short-term stability assessment of atomic clocks may lead to significant impacts.

This dataset is used to analyze the relationship between counter measurement noise and frequency stability after denoising with the Savitzky-Golay filter, and combined with K-fold cross-validation to determine the filter's parameters, in order to avoid filter distortion.