Jamming Mitigation using an Improved Fuzzy Weighted Least Square Method in Combined GPS and GLONASS Receiver

Abstract One of the important concerns in Global Positioning System (GPS) is interference and jamming attack. Different methods have been proposed to mitigate GPS jamming such as antenna array and digital signal filtering. In this paper, the integration of GPS with Russian Global Navigation Satellite System (GLONASS) is utilized to overcome this issue. Increasing the number of visible satellites is a significant benefit of this combined system. We also introduce an improved Fuzzy-Weighted Least-Square (FWLS) method to weight the information according to its transmitter system reliability and satellite properties. The experimental comparison between the proposed method and an improved Wavelet-Packet-Transform (WPT)-based anti-jammer shows that though the accuracy of WPT-based method is more than FWLS method, the FWLS has significantly less computation complexity and more reliability.