TY - GEN
T1 - Detecting GPS spoofing via a multi-receiver hybrid communication network for power grid timing verification
AU - Mina, Tara Yasmin
AU - Bhamidipati, Sriramya
AU - Gao, Grace Xingxin
N1 - Publisher Copyright:
© 2018 Institute of Navigation. All rights reserved.
PY - 2018
Y1 - 2018
N2 - For the future Smart Grid, devices called Phasor Measurement Units (PMUs) are being widely deployed to continuously monitor the state of the power grid in real-time. The voltage and current phasor measurements are synchronized across the network using GPS. However, because civilian GPS signals are unencrypted, these receivers are susceptible to being spoofed. In this work, we propose a wide-area spoofing detection algorithm for PMUs using a hybrid communication architecture which overlays NAPSInet, a proposed communication structure for the future Smart Grid. We create conditioned signal snippets which contain the military P(Y) signal, whose precise code sequence is unavailable to civilian users and thus cannot be generated by an attacker. Thus, the encrypted signal establishes a type of signature in the background of all authentic GPS signals, the presence of which can be verified by correlating between conditioned signals from other distant receivers. We further consider the potential for a coordinated spoofing attack against regional collections of cross-check receivers and generate representative snippets for each regional network to verify against other distant sites. Additionally, we use real-world data recorded during a government-sponsored, live-sky spoofing event and demonstrate our algorithm can successfully evaluate the authenticity of a widely dispersed network of receivers.
AB - For the future Smart Grid, devices called Phasor Measurement Units (PMUs) are being widely deployed to continuously monitor the state of the power grid in real-time. The voltage and current phasor measurements are synchronized across the network using GPS. However, because civilian GPS signals are unencrypted, these receivers are susceptible to being spoofed. In this work, we propose a wide-area spoofing detection algorithm for PMUs using a hybrid communication architecture which overlays NAPSInet, a proposed communication structure for the future Smart Grid. We create conditioned signal snippets which contain the military P(Y) signal, whose precise code sequence is unavailable to civilian users and thus cannot be generated by an attacker. Thus, the encrypted signal establishes a type of signature in the background of all authentic GPS signals, the presence of which can be verified by correlating between conditioned signals from other distant receivers. We further consider the potential for a coordinated spoofing attack against regional collections of cross-check receivers and generate representative snippets for each regional network to verify against other distant sites. Additionally, we use real-world data recorded during a government-sponsored, live-sky spoofing event and demonstrate our algorithm can successfully evaluate the authenticity of a widely dispersed network of receivers.
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U2 - 10.33012/2018.15904
DO - 10.33012/2018.15904
M3 - Conference contribution
AN - SCOPUS:85062956517
T3 - Proceedings of the 31st International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2018
SP - 2963
EP - 2977
BT - Proceedings of the 31st International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2018
PB - Institute of Navigation
T2 - 31st International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2018
Y2 - 24 September 2018 through 28 September 2018
ER -