时间：2017 年1 月2 日(周二) 10:00-11:00

地点：实验十五楼207 会议室

报告人：施凌教授 香港科技大学

Title: A Secure Cross-Layer Design for Remote Estimation under DoS Attacks

Abstract:

We consider security issues of a cyber physical system (CPS) under denial-of-service

(DoS) attacks. The measurements of multiple sensors are transmitted to a remote

estimator over a multi-channel network, which may be congested by an intelligent

attacker. Aiming at improving the estimation accuracy, we first propose a novel

aggregation scheme for the estimator to produce accurate state estimates, from which we

obtain a closed-form expression of the expected estimation error covariance. We further

develop a sensor-attacker game to design the cooperative and defensive channel selection

strategy, which avoids the sensors being attacked in an energy-efficient way. Numerical

examples are provided to illustrate the developed results.

Biography:

Ling Shi received the B.S. degree in electrical and electronic engineering from Hong

Kong University of Science and Technology, Kowloon, Hong Kong, in 2002 and the

Ph.D. degree in Control and Dynamical Systems from California Institute of Technology,

Pasadena, CA, USA, in 2008. He is currently an associate professor at the Department of

Electronic and Computer Engineering, Hong Kong University of Science and

Technology. His research interests include cyber-physical systems security, networked

control systems, sensor scheduling, and event-based state estimation. He has been serving

as a subject editor for International Journal of Robust and Nonlinear Control from March

2015 and an associate editor for IEEE Transactions on Control of Network Systems from

July 2016. He also served as an associate editor for a special issue on Secure Control of

Cyber Physical Systems in the IEEE Transactions on Control of Network Systems in

2015-2016.