Software-Defined Radio Implemented GPS Spoofing and Its Computationally Efficient Detection and Suppression

Abstract

This paper demonstrates Global Positioning System (GPS) spoofing with a commercial, off the shelf software defined radio (SDR) emitter fitted with a local oscillator exhibiting a stability consistent with the medium term (0.01 to 1000 s) stability of atomic clocks on GPS satellite systems. Computationally efficient means of detecting spoofing is then addressed, namely codeless spoofing detection by phase difference measurement of the signals received from a two-antenna array. We conclude by using a simple and effective method to suppress spoofing to restore positioning and time transfer capabilities, and extend the demonstration to jamming cancellation. Experiment results demonstrate the performance of the proposed methods with an emphasis on computational efficiency for real time execution on embedded single board computers.

Wireless Communication Attack Using SDR and Low-Cost Devices

“…GPS was created as a military system. However, due to its broad civilian use, it is subject to jamming and spoofing attacks, which are now possible to anyone with a SDR [4]. Based on data received from several GPS satellites, the GPS receiver estimates its own dimensional position.…”

“…the GPS security remains a critical issue related to the global information infrastructure. Many methods of GPS attack are presented in [4] [5] [6] based on SDR. Other critical attacks are directed to RFID systems.…”

“…The HackRf One 3 is a SDR peripheral that can transmit and receive radio signals at frequencies ranging from 1 MHz to 6 GHz. The first way to com-municate with the device is by hackrf transfer program 4 . The second method is using the GNURadio package.…”