Wavelet Denoising for Amplitude-Modulated Interference Signal Mitigation for GPS Software Receiver

Recently there is a growing demand for continuous, reliable, and accurate positioning and navigation with the wide spread of a wide range of applications that depend mainly on Global Navigation Satellite System (GNSS), including Global Positioning System (GPS). The widespread of such applications resulted in GPS being an appealing target for jamming. The presence of intentional or unintentional interference is considered one of the major threats to the integrity of the GPS system that not only jeopardizes positioning and timing services but can significantly endanger safety of evolving applications such as autonomous vehicles. This paper aims to propose anti-jamming technique based on wavelet denoising. The proposed technique is assessed based on simulated static and dynamic scenarios obtained from Spirent™ system for a fully controlled environment. The results show that the proposed technique is able to effectively suppress amplitude-modulated (AM) jamming signal.