Skip to search formSkip to main contentSkip to account menu

Architecture and Algorithm Design of Navigation Satellite Robust Ensemble Clock System

This research proposes a framework for the GNSS robust heterogeneous ensemble clock system that includes the two-stage Kalman filter logic structure and results show that the spaceborne composite clock signal combines the advantages of short- and long-term frequency stability and improves the overall stability performance compared with a single AFS.
IEEE (opens in a new tab)

Improving the short-term frequency stability of a magnetic-state-selected cesium beam clock with optical detection.

The microwave spectrum line shape and the signal-to-noise ratio of a compact optically detected magnetic-state-selection cesium beam clock are analyzed and the performance is related to the atomic utilization ratio and locking parameters when the laser frequency noise is the dominant noise source.
PubMed (opens in a new tab)

Long-term autonomous time-keeping of navigation constellations based on sparse sampling LSTM algorithm

This paper proposed a two-level satellite timing system, and used multiple time-keeping node satellites to generate a more stable space-based time scale, and used the sparse sampling Long Short-Term Memory (LSTM) algorithm to improve the accuracy of clock error long-term prediction on space-based time scale.
Springer (opens in a new tab)

Optimization of frequency shifts in optically detected magnetic-state-selection cesium beam atomic clocks

In this paper, we report a new method to suppress the AC Stark effect (light shift) in compact cesium beam atomic clocks. The clock used in experiment uses the optically detected…
IOP Publishing (opens in a new tab)

Performance Test and Power-Law Spectrum Analysis of Domestic Cesium Clocks

A preliminary assessment on the performance of domestic cesium clocks is given according to test data, which shows that the long-term performance is in full accord with that of frequency signals.
Publisher (opens in a new tab)

A Method for Autonomous Generation of High-Precision Time Scales for Navigation Constellations

The constellation-level high-precision time scale generation technology proposed in this paper can significantly improve the stability performance of navigation constellation autonomous timekeeping.
PDF (opens in a new tab)
By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy Policy (opens in a new tab), Terms of Service (opens in a new tab), and Dataset License (opens in a new tab)