ACCOUNTING FOR SMALL-SCALE IRREGULARITIES IN THE PROPAGATION OF SHORT RADIO WAVES IN THE HIGH-LATITUDE IONOSPHERE

In the modern world, the need for accurate knowledge of the state of the high-latitude ionosphere has increased, the modeling of which is difficult due to the presence of a large-scale structure. However, the empirical and theoretical models of the ionosphere developed in recent years have made significant progress in taking them into account. The situation with small-scale irregularities is more complicated. In this work, the comparison was performed between experimental ionograms of vertical, oblique, external and transionospheric sounding with ionograms, calculated by a computer simulation taking into account small-scale irregularities. The obtained conformity has allowed one to conclude that there is a range of parameters values of these irregularities which can be used in interpreting and predicting the propagation characteristics of short radio-waves in complicated conditions, especially during disturbances.