Purdue SMART Lab Team


Sangjun Lee

Sangjun became a SMART Lab alumni in August 2021.

 Ph.D. Purdue University, West Lafayette, IN, 2021 (Technology)
Dissertation: "Secure Multi-Robot Systems: Threat Identification and Countermeasure Development"
M.S. Purdue University, West Lafayette, IN, USA, 2015 (Aeronautics and Astronautics Engineering)
B.S. Sejong University, Seoul, South Korea, 2011 (Aerospace Engineering)

Current Research:

    My research studies problems concerning the security of multi-robot systems, covering the key aspects such as threat identification methodologies and countermeasure developments. To ensure the security of multi-robot systems with the given objectives, this study proposes an attack diagnosis method and an attack-resilient control system for multi-robot systems. The main tasks to be achieved in this study are:
    (1) types of attack that can occur on a robotic system and corresponding system requirements are introduced to model and understand how a cyber adversary may affect the system operation;
    (2) an attack diagnosis scheme is developed to enable an agent in multi-robot systems continuously monitored for anomalies caused by adversary actions;
    (3) an attack-resilient controller is designed to adapt to the abnormal situation so that the overall system continues to satisfy its goal, thus mitigating the impact of attacks;
    (4) the performance of the proposed system is illustrated and evalutated using real robots.
    This work is sponsored by the U.S. Department of Justice.

Publications: (Google Scholar)
  • Wonse Jo, Jeehwan Park, Sangjun Lee, and Byung-Cheol Min, "Design of a Human Multi-Robot Interaction Medium of Cognitive Perception", 2019 14th ACM/IEEE International Conference on Human-Robot Interaction (HRI), Daegu, South Korea, March 2019, pp. 652-653.
  • Sangjun Lee and Byung-Cheol Min, "Distributed Direction of Arrival Estimation-aided Cyberattack Detection in Networked Multi-Robot Systems", 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Madrid, Spain, October 2018, pp. 6168-6173.
  • Byung-Cheol Min, Ramviyas Parasuraman, Sangjun Lee, Jin-Woo Jung, and Eric T. Matson, "A Directional Antenna based Leader-Follower Relay System for End-to-End Robot Communications", Robotics and Autonomous Systems, Vol. 101, pp. 57-73, March 2018.
  • Sangjun Lee, Yongbum Cho, and Byung-Cheol Min, "Attack-aware Multi-sensor Integration Algorithm for Autonomous Vehicle Navigation Systems", 2017 IEEE International Conference on Systems, Man and Cybernetics (SMC), Banff, Canada, 5-8 October, 2017.
  • Jun Han Bae, Jeehwan Park, Sangjun Lee, and Byung-Cheol Min, "Tri-SedimentBot: An Underwater Sediment Sampling Robot", Automation Science and Engineering (CASE), 2016 IEEE International Conference on, Fort Worth, Texas, USA, Aug. 21-24, 2016.
  • Byung-Cheol Min, Yongho Kim, Sangjun Lee, Jin-Woo Jung, and Eric T. Matson, "Finding the Optimal Location and Allocation of Relay Robots for Building a Rapid End-to-end Wireless Communication", Ad Hoc Networks, Vol. 39, Issue 15, pp. 23-44, March 2016.

    lee1424 at purdue dot edu