Ubiquitous Localization and Trajectory Tracking Approach for GNSS Jammer

It is more and more significant to quickly solve GNSS (Global Navigation Satellite System) jamming problem whenever and wherever possible. The dynamic jammer is more difficult to be localized, tracked and deactivated than the stationary one, so usually poses a greater threat. Based on thought of GNSS + Network (such as 5G mobile communication, Internet and Internet of Things) enabling, a new approach proposed in this paper generates the localization result of a dynamic or stationary jammer in real-time by fusion of the basic observation information, position information and factory data from GNSS and mobile communication integrated terminals. Then it obtains the trail of the jammer near real-time by reprocessing multi-epoch localization results. The structure and estimation method of jammer localization error sources are analyzed in depth, and further localization and trajectory tracking of a GNSS jammer for multiple typical moving scenes is simulated in this paper. Finally, an optimization strategy of the critical parameter is presented for multiple or unknown jammer dynamics. It shows through simulation and analysis that, the approach presented is accurate and stable; the localizing and tracking accuracy is insensitive to position error of receivers, and is slightly affected by receiver density; under typical situations, tracking accuracy of a single stationary and dynamic jammer is up to 30m and 50m or so respectively.