Local Variations in the Orientation of Transverse Anisotropy and the Direction of Drift in the F-Region of the Mid-Latitude Ionosphere

Analysis of fluctuations of satellite radio signals scattered on small-scale inhomogeneities in the F-region of the ionosphere and received by a ground receiver in Moscow shows that both a single maximum and two or three maxima can be observed in the latitudinal profile of the variance of the logarithm of the relative amplitude. The orientation of the transverse anisotropy of the inhomogeneities is determined and compared to the direction of the drift, obtained by the DPS-4 ionosonde using the LocalDrift software.