Active impact on the ionosphere and variations of velocity characteristics of field-aligned irregularities

Abstract

Ionospheric irregularities make significant impact on the efficiency of radio-engineering system operation. Our investigations carried out on Kamchatka peninsula showed that field-aligned irregularities have particularly destructive influence on decame-ter radars. We pin some definite expectations with them to increase the efficiency ofradio-engineering systems by active impact on the ionosphere. One of the important parameters of such irregularities is their velocity characteristics. When determining irregularity velocity in the impact area, different approaches are used, for example, aspect scattering method which specifies velocity on the whole but does not allow one to determine its vertical and horizontal components, direction of its motion. We have developed an ap-proach which allows us to solve this problem. As an example, results of observations over EISCAT experiments in October 2019 are presented.