Effects of ionospheric irregularity anisotropy on GNSS operation
In Global Navigation Satellite System (GNSS) signals passing through a randomly inhomogeneous anisotropic ionosphere there occur phase and amplitude fluctuations (scintillation). In this paper present studies of the elevation angle dependences of density of phase slips. Moreover, the numerical simulation of the anisotropic effect of ionospheric irregularities reveals a good qualitative agreement with empirical data, and enables us to explore factors that obscure the anisotropic effects.