With the rapid development of society, whether it is a military control system or a civilian control system, various distributed systems have put forward higher and higher requirements for the real-time interaction of control information among various devices in the system. The purpose of this paper is to consider the research on the time synchronization method of the distributed system of the local area network, and study the extended Kalman filtering method based on the prior coordinate constraints to improve the PPP time transfer performance; for the PPP timing calculation, the ambiguity fixed reliability requirements are higher than the positioning calculation. According to the actual situation, the ambiguity fixing method based on the integer phase clock method is studied, and the ambiguity fixing and quality control strategy suitable for timing calculation is proposed. Quality control at each stage. Based on the average standard deviation results, this paper continues to calculate the average root mean square error of the above phase difference data in different smoothing times, and evaluates the synchronization accuracy of the terminal in different durations. The root mean square errors of scheme two in the duration of 60min, 120min and 180min are 0.13, 0.15, and 0.2ns, respectively, and the root mean square errors of scheme three in the same duration are 0.12, 0.14, and 0.18ns, respectively.

Mohammed Pshtiwan Othman. Time Synchronization Method of Distributed System Considering Local Area Network. Distributed Processing System (2020), Vol. 1, Issue 3: 17-26. https://doi.org/10.38007/DPS.2020.010303.

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