Study of the Effect of the Equatorial Ionosphere Anomaly on the Polarizing Characteristics of HF Radio Waves

A study of the change in the polarization characteristics of high-frequency radio waves, caused by the influence of the Earth's ionosphere in the region of the equatorial anomaly, is carried out on the basis of the Hamilton-Lukin bicharacteristic method. The dependence of the group time of signal arrival on the coordinate of the ray exit is considered. The rate of phase change along the rays from height, phase deviation as a function of group time and horizontal coordinates, as well as differences of refraction indicators of ordinary and unusual wave as the function of height along the rays are investigated. The angle of Faraday rotation in the meridian direction at the receiving point is calculated taking into account the change in the magnitude and orientation of the magnetic field and the influence of the equatorial anomaly of the ionosphere and its surroundings. The calculations are made for three frequencies: 336 MHz, 436 MHz and 536 MHz.