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GNSS Blind Interference Detection Based on Fourth-Order Autocumulants

Nunes, F. ; Sousa, F.

IEEE Transactions on Aerospace and Electronic Systems Vol. 52, Nº 5, pp. 2576 - 2588, October, 2016.

ISSN (print): 0018-9251
ISSN (online):

Journal Impact Factor: 1,757 (in )

Digital Object Identifier: 10.1109/TAES.2016

Abstract
GNSS signals affected by additive channel are approximately Gaussian, but often the presence of interference may change that distribution. We propose a blind detection method based on the Giannakis-Tsatsanis Gaussianity test to evaluate the presence of narrowband and wideband non-Gaussian interference. This method, resorting to sample fourth-order autocumulants, is compared to other Gaussianity tests. The asymptotic covariance matrix of the estimated autocumulant vector is analytically determined, thus reducing the complexity of the proposed technique.