Evaluation of GNSS pulsed interference mitigation techniques accounting for signal conditioning

In this paper, the pulsed interference mitigation techniques are analyzed and characterized by accounting for signal conditioning. It is shown that Interference Cancellation (IC) is the optimal mitigation technique when an infinite number of bits are available. However, its performance degrades as the number of bits decreases. In the limit case when a single bit is used, IC is no longer the most effective mitigation technique since it is not possible to recover the useful signal even if the interference component is removed. In this scenario, Pulse Blanking (PB) should be adopted, also because of its reduced computational load. Finally, Time-Frequecy (TF) excision exploits the fact that interfering signals have a limited bandwidth. However, quantization tends to spread the band of the received signals making TF excision less effective. These three mitigation techniques have been characterized both theoretically and experimentally taking into account quantization and the effect of the AGC.

BORIO Daniele;  CANO PONS Eduardo; 

2013-01-21

European Group of Institutes of Navigation (EUGIN)

JRC69414

https://publications.jrc.ec.europa.eu/repository/handle/JRC69414,