GPS Spoofing Detection for PMUs Using a Hybrid Network

Presented by: Grace Gao, University of Illinois at Urbana-Champaign, Sriramya Bhamidipati, Doctoral student - Aerospace Engineering Department, University of Illinois at Urbana-Champaign, and Tara Yasmin Mina, Graduate student - Electrical and Computer Engineering Department, University of Illinois at Urbana-Champaign

March 28, 2019, 11:00AM EDT 

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In the future Smart Grid, Phasor Measurement Units (PMUs) will monitor the power grid state in real-time by synchronizing measurements across the network using GPS. However, because civilian GPS is unencrypted, PMUs are susceptible to spoofing. This webinar presents a spoofing detection algorithm using a wide-area, hybrid communication architecture: Each PMU securely transmits conditioned signal fragments containing the military P(Y) signal, which serves as an encrypted signature in the background of all authentic GPS signals. This signature is then verified amongst several, distant receivers, strategically picked with a subset selection algorithm. The algorithm has been demonstrated to successfully evaluates the authenticity of a widely dispersed receiver network, using real- world data recorded during a government-sponsored, live-sky spoofing event.

WHO SHOULD ATTEND: AnyoneEResearchers and engineers in the power systems industry and research labs.


ImageGrace X Gao is an assistant professor in the Aerospace Engineering Department at University of Illinois at Urbana-Champaign. She obtained her Ph.D. degree at Stanford University. Her research is on GPS/GNSS-based positioning, navigation and timing with applications to manned and unmanned aerial vehicles, robotics and power systems.
Prof. Gao has won a number of awards, including the NSF CAREER Award, the Institute of Navigation Early Achievement Award and RTCA William E. Jackson Award. She has won Best Paper/Presentation of the Session Awards 14 times at ION GNSS+ conferences. She received the Dean's Award for Excellence in Research from the College of Engineering, University of Illinois at Urbana-Champaign in 2017. For her teaching, Prof. Gao has been on the List of Teachers Ranked as Excellent by Their Students at University of Illinois multiple times. She won the College of Engineering Everitt Award for Teaching Excellence in 2015, AIAA Illinois Chapter’s Teacher of the Year in 2016, and the Engineering Council Award for Excellence in Advising in 2017 and 2018.

Professor Grace Gao advises her co-presenters Sriramya Bhamidipati & Tara Yasmin Mina.

ImageSriramya Bhamidipati is a doctoral student in the Aerospace Engineering Department at the University of Illinois at Urbana Champaign. She received her M.S. degree in Aerospace Engineering from University of Illinois at Urbana-Champaign in 2017. She received her B.Tech. with honors in Aerospace Engineering and minor in Systems and Controls Engineering from Indian Institute of Technology Bombay, India in 2015. 

ImageTara Yasmin Mina is a graduate student in the Electrical and Computer Engineering Department at the University of Illinois at Urbana-Champaign. She received her B.S. with honors in Electrical Engineering from Iowa State University in 2017.


For any questions, please contact Phyllis Caputo at

To view previous webinars on-demand, visit the IEEE Smart Grid Resource Center