Purdue SMART Lab Team

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Sangjun Lee

Education:
  Purdue University, 2015 - present (Technology)
Ph.D. student
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:

    Ensuring Cybersecurity and Safety of Multi-Robot Systems
    - This study addresses the potential safety concerns associated with robotic autonomous applications with an emphasis on cyberattack detection. A model-based approach is considered to design threat detection and identification schemes, and feasible strategies are proposed to mitigate potentially harmful consequences of cyberattacks. This approach relies on a model-based detection algorithm to generate a residual and compare it with a predefined threshold. If the residual exceeds the threshold, the detection scheme triggers an alarm. In this manner, abnormal dynamic behavior and abrupt system changes caused by cyberattacks can be detected. The following list presents specific goals to be achieved:
    (1) to determine whether the system is under attack or not;
    (2) to calculate the amount of time between an attack and its detection;
    (3) to identify the location of an attack among components; and
    (4) to specify the type of attack and estimate its magnitude.
    This work is sponsored by the U.S. Department of Justice.

Publications:
  • 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 2018), Madrid, Spain, October 1-5, 2018. (Accepted)
  • 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.

Contact:
    lee1424 at purdue dot edu