In this paper, we proposed the system for direction detection and elimination of GPS L1 C/A spoofing signal. Generally, because spoofing signal is transmitted by spoofer located on the ground, the proposed system consists of GPS receiver and two antennas for direction detection and elimination of spoofing attack. If the extension of the two antennas coincides with the direction of spoofing signal, we could find the direction of spoofing attack and eliminate it. We performed the simulation for analyzing the impact on GPS signal received two antennas.

Keywords: spoofing, GPS, RF signal