Improving the Resolution of Diagnostics of Inhomogeneous Plasma Media Using Spatial Field Processing with Due Regard to Multipath Effects.

We consider the problem of eliminating the effect of multipath radio wave propagation in inhomogeneous plasma media by additional spatial processing of field measurements. This field processing is based on the Double Weighted Fourier Transform (DWFT). The calculations are made for cases of multipath propagation due to radio wave refraction by plasma focusing and defocusing lenses for ionospheric and laboratory plasma scales. It has been shown that images of plasma irregularities can be reconstructed with high resolution using the DWFT spatial processing for circular field measurements under multipath propagation of radio waves. Comparative analysis of the results obtained from spatial field processing by the inverse DWFT method and the Fresnel inversion is performed. [ABSTRACT FROM AUTHOR]