Jammer Localization Approach Based on Crowdsourcing Carrier-to-Noise Density Power Ratio Fusion

摘要

GNSS (Global Navigation Satellite System) jamming events become more and more rampant, involve larger and larger regions, and cause interruption of or threat against services of position, velocity and time (PVT). Along with the quantitatively rapid growth and wide prevalence of smart phones embedded with satellite navigation function modules, it is quite possible to locate wide-area jammers by using satellite navigation terminals. This paper presents a jammer localization approach based on crowdsourcing observation data, which is capable of completing jammer localization with a high success rate and an accurate result, by fusing C/N_0 (carrier-to-noise density power ratio) measurements and inherent parameters of satellite navigation terminals. The approach has advantages of large area coverage, real time, low need of software and hardware configuration of terminals, low demand on the position relationship of a jammer and its surrounding terminals, and insensitiveness to jamming characteristics.