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Civil Global Navigation Satellite System (GNSS) signals are vulnerable to spoofing attacks that deceive a victim receiver into reporting counterfeit position or time information. The primary contribution of this paper is a non-cryptographic GNSS anti-spoofing technique that “sandwiches” a spoofer between a correlation function distortion monitor and a total in-band power monitor. The defense exploits...
Global Navigation Satellite System (GNSS) signals serve as a worldwide timing reference in numerous technological sectors. Yet GNSS receivers are vulnerable to so-called spoofing attacks that can manipulate the time reference. We illustrate the need for a probabilistic security model in the context of authenticating a timing signal as opposed to the traditionally non-probabilistic security models...
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