Distributed clock skew and offset estimation from relative measurements in mobile networks with Markovian switching topology

作者：Liao Chenda^*; Barooah Prabir

来源：Automatica, 2013, 49(10): 3015-3022.

DOI：10.1016/j.automatica.2013.07.015

• Sensor networks
• Mobile networks
• Time synchronization
• Distributed estimation
• Cooperative control
• Markovian switching

We analyze a distributed algorithm for the estimation of scalar parameters belonging to nodes in a mobile network from noisy relative measurements. The motivation comes from the problem of clock skew and offset estimation for the purpose of time synchronization. The time variation of the network was modeled as a Markov chain. The estimates are shown to be mean square convergent under fairly weak assumptions on the Markov chain, as long as the union of the graphs is connected. Expressions for the asymptotic mean and correlation are also provided.

• 出版日期2013-10