Security Measure Implementation for Distributed State Estimation

Toward the realization of secure and resilient cyber-physical human systems (CPHS), this paper deals with the distributed secure state estimation problem considering security measure implementation for the systems. We present that the implementation enhances the system resilience, which means that the distributed state estimation can be achieved even if more networks are compromised. We also show that the implementation is coNP-hard, but, on the positive side, the implementation can be solved in polynomial time when the system satisfies a certain condition. This paper further provides a distributed secure state estimator exploiting the security implementation. Copyright (c) 2024 The Authors.