Hybrid time synchronization algorithm for avionics clouds

作者：Li, Zheng; Li, Qiao; Zhao, Luxi; Xiong, Huagang

来源：Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(8): 1090-1094.

DOI：10.13700/j.bh.1001-5965.2014.0038

• Bayesian estimations
• Convergence rates
• Distributed consensus
• Network environments
• Network modeling
• Synchronization operation
• Time synchronization
• Time synchronization algorithms

To meet the time synchronization requirement in avionics clouds, corresponding models were built including network model, clock model and delay model. Two synchronization operation procedures were provided for nodes in different network environments. The receiving and processing delay of the time synchronization message was compensated based on Bayesian estimation. Combining the centralized time synchronization mechanism and the distributed consensus time synchronization mechanism, the hybrid time synchronization algorithm was proposed. The performance of the proposed algorithm was compared with that of the traditional time synchronization algorithms. The results show that the proposed algorithm has the highest convergence rate and higher synchronization accuracy than the traditional time synchronization algorithms, and when the link failure rate is below 50%, the proposed algorithm also has almost the same robustness as the traditional distributed consensus time synchronization algorithm. The proposed algorithm provides a reference for solving the time synchronization problem in avionics clouds.

• 出版日期2014-8-1
• 单位北京大学