Detection of Biasing Nodes in Distributed Discrete Time Varying Filter Networks

The paper develops a distributed filtering methodology for detection of recalcitrant filter nodes. We revisit the discrete time distributed filtering problem and introduce a distributed filter for detecting biasing behavior of such nodes. The gnodes of the proposed filter treat the neighbors' information as additional noisy measurements. Also, the network topology is allowed to be time-varying. The calculation of the detector gains involves a matrix recursion and can be carried out on-line.