Abstract
With the wide use of the global navigation satellite system (GNSS), its vulnerability has become an increasing serious problem. More specifically, interference is one of the severe challenges faced by GNSS applications. There are relatively mature detection and excision methods for the simple interference currently, such as pulse interference, single-tone interference, and narrow-band interference. On contrary, for complicating interference, such as fast chirp interference, there are a few effective suppression methods. In this paper, the model of periodic fast chirp signal is built first. Then, several traditional interference suppression methods of GNSS receiver are used to excise fast chirp interference to analyse their feasibility. Finally, both theoretical analysis and simulation results show that traditional interference suppression methods for the GNSS receiver do not perform well on fast chirp interference.
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