Comparison of global positioning system (GPS) spoofing methods and countermeasures

The Global Positioning System (GPS) is a technology of critical importance worldwide, used in various applications such as positioning, navigation, and timing. However, due to the low power nature of GPS signals, these signals can be jammed or spoofed. This thesis provides a detailed examination of GPS spoofing attacks and the countermeasure methods developed to combat these attacks. The study experimentally tests various countermeasure techniques against spoofing strategies such as replay and forgery. Experiments conducted using the Software Defined Radio (SDR) demonstrated the susceptibility of various GPS receivers to spoofing and identified effective countermeasure strategies. The results obtained reveal which techniques are most effective against GPS spoofing attacks and offer valuable insights for future research.