Distributed Kalman Filtering with Privacy against Honest-but-Curious Adversaries
Chapter
Accepted version
Permanent lenke
https://hdl.handle.net/11250/3047906Utgivelsesdato
2021Metadata
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Originalversjon
10.1109/IEEECONF53345.2021.9723222Sammendrag
This paper proposes a privacy-preserving distributed Kalman filter (PP-DKF) to protect the private information of individual network agents from being acquired by honest-but-curious (HBC) adversaries. The proposed approach endows privacy by incorporating noise perturbation and state decomposition. In particular, the PP-DKF provides privacy by restricting the amount of information exchanged with decomposition and concealing private information from adversaries through perturbation. We characterize the performance and convergence of the proposed PP-DKF and demonstrate its robustness against perturbation. The resulting PP-DKF improves agent privacy, defined as the mean squared estimation error of private data at the HBC adversary, without significantly affecting the overall filtering performance. Several simulation examples corroborate the theoretical results.