Under the active impact on the ionosphere, artificial inhomogeneities are formed. Their properties are investigated with incoherent scattering radars, aspect scattering and test wave methods etc. Scattering on ionospheric artificial inhomogeneities of a heating wave as a mean of energy injection into the inter-layer ionospheric waveguide is of interest. As a rule, in order to do that, scattering on ionospheric magneticallyoriented inhomogeneities is applied. The efficiency of energy injection into the ionospheric waveguide is determined by a scattered wave spatial distribution otherwise by a direction diagram of magnetically-oriented inhomogeneity set. To estimate their directional properties, SDR (Software-defined radio) technology will be used.
Among other things, artificial magnetically oriented irregularities are generated by the experiments on active impact on the ionosphere. They can be used for interlayer ionospheric waveguide excitation. We can suggest that the efficiency of waveguide excitation depends on mutual location of magnetically oriented irregularities and a feed element as well as on their topology in the interlayer ionospheric waveguide. To verify this hypothesis, electromagnetic radiation monitoring was applied in Kamchatka. The radiation was generated by the active impact on the ionosphere in Troms (Norway).
The paper considers a possibility of investigation of magnetically oriented irregularities in the ionosphere using a SuperDARN system. To determine the parameters of such irregularities, the authors suggest applying backscattering of decameter waves. As a rule, scattering on magnetically oriented irregularities of the ionosphere is considered to be an aspect one directed along the Earth magnetic field lines. It is shown that under certain conditions, such as propagation path orientation along the Earth magnetic field lines, polarization and frequency of the emitted wave, not only aspect but also resonance backscattering of decameter waves is possible. Results of experimental observations of such scattering on magnetically oriented irregularities of the ionosphere in Kamchatka are presented.
Variations of ionospheric-magnetospheric relation energy, as one of the possible outer climatology factors, may be traced on the basis of analysis of natural geophysical phenomena such as ionosphere artificial radio radiation and magnetic storms. Experiments on active impact on the ionosphere have been carried out for quite a long time in Russia as well. The most modern heating stand is located in Alaska; it has been used within the HAARP Program. The possibility of this stand to affect geophysical fields, in particular, the geomagnetic field is of interest.