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Performance Analysis of Kalman-Filter-Based Clock Synchronization in IEEE 1588 Networks

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2 Author(s)
Giorgi, G. ; Dept. of Inf. Eng., Univ. of Padova, Padova, Italy ; Narduzzi, C.

Performances in network-based synchronization depend on several related factors, including the instability of local clocks, the rate at which timing information is exchanged, and the accuracy of the resulting correction estimates. This paper analyzes these effects and their relationships, showing how these may affect the design of an IEEE 1588 Precision Time Protocol synchronization scheme. This paper introduces a state-variable clock model for which realistic parameters can be obtained for different kinds of clocks from experimental measurements of Allan variance plots. A Kalman-filter-based clock servo employing this model is developed, and a simulation analysis of the behavior of clock regulation and the effect of parameter variations on its performances is presented.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:60 ,  Issue: 8 )