Angular power spectrum of scattered radiation in ionospheric plasma with both electron density and magnetic field fluctuations

摘要

The influence of anisotropy of both electron density and external magnetic field fluctuations on the spatial power spectrum (SPS) of scattered electromagnetic waves is considered in this paper. Stochastic differential equation is obtained for the phase fluctuations using smooth perturbation method taking into account diffraction effects. Second order statistical moments are calculated for arbitrary correlation functions of electron density and external magnetic field fluctuations. Numerical calculations were carried out for anisotropic Gaussian correlation function containing nondimensional anisotropic parameter and the angle of inclination of prolate irregularities with respect to the external magnetic field. SPS of scattered radiation has a pronounced gap caused by electron density fluctuations. The influence of an external magnetic field on a double-peaked shape has been analytically and numerically.