DEFENDING AGAINST RADIO FREQUENCY SPOOFING ATTACKS ON FIXED GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVERS USING INTERFEROMETRIC REFLECTOMETRY SIGNATURES
Space-based positioning, navigation and timing (PNT) systems, such as Global Positioning System (GPS), are vulnerable to radio frequency interference (RFI) and spoofing. We can defend against these types of attacks by having alternate sources of positioning, navigation and timing information, however, delays in detection can result in cascading, negative consequences to users. This is especially true with GPS-dependent critical infrastructure and key resource (CIKR) sectors such as the electric power grid, telecommunications, transportation and emergency services. While detection of RFI is ...
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