›› 2012, Vol. 42 ›› Issue (05): 1291-1295.

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Clock synchronization algorithm in wireless networked instruments based on square-root Kalman filter

PANG Li-li1,2, LV Qi-chen3, WANG Shi-long1, SUI Yang-yi1, LIN Jun1   

  1. 1. College of Instrument Science and Electronic Engineering, Jilin University, Changchun 130061, China;
    2. College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun 130012, China;
    3. 94789 Troop, PLA, Nanjing 210018, China
  • Received:2011-09-27 Online:2012-09-01 Published:2012-09-01

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Abstract: A clock synchronization algorithm in wireless measurement and control network is proposed. It is based on the square-root Kalman Filter to achieve the optimal estimation of the clock offset and skew on the premise of algorithm convergence. The algorithm also puts forward a model of communication cost and clock accuracy to calibrate the clock under certain clock accuracy. This can ensure the stability and accuracy of the clock and reduce the communication cost. Some theoretical and simulation results are presented to illustrate the performance of the proposed clock synchronization algorithm.

Key words: electronics, clock synchronization, square-root Kalman filter, communication energy consumption

CLC Number: 

  • TP393
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