Title
Distributed Kalman filter in a network of linear systems.
Abstract
This paper is concerned with the problem of distributed Kalman filtering in a network of interconnected subsystems with distributed control protocols. We consider networks, which can be either homogeneous or heterogeneous, of linear time-invariant subsystems, given in the state-space form. We propose a distributed Kalman filtering scheme for this setup. The proposed method provides, at each node, an estimation of the state parameter, only based on locally available measurements and those from the neighbor nodes. The special feature of this method is that it exploits the particular structure of the considered network to obtain an estimate using only one prediction/update step at each time step. We show that the estimate produced by the proposed method asymptotically approaches that of the centralized Kalman filter, i.e., the optimal one with global knowledge of all network parameters, and we are able to bound the convergence rate. Moreover, if the initial states of all subsystems are mutually uncorrelated, the estimates of these two schemes are identical at each time step.
Year
DOI
Venue
2018
10.1016/j.sysconle.2018.04.005
Systems & Control Letters
Keywords
Field
DocType
Estimation,Kalman filter,Distributed systems
Linear system,Control theory,Homogeneous,Algorithm,Uncorrelated,Kalman filter,Rate of convergence,Mathematics
Journal
Volume
ISSN
Citations 
116
0167-6911
3
PageRank 
References 
Authors
0.38
14
4
Name
Order
Citations
PageRank
Damián Marelli116419.58
Mohsen Zamani2588.83
Minyue Fu31878221.17
Brett Ninness462967.59