Behavior of polarization of downcoming radio waves including transverse magnetic field

The polarization behavior of electromagnetic waves propagating through a magnetoionic medium is investigated for the case of a moving source when the path of propagation crosses the point at which the magnetic field is transverse. The polarization is described in terms of the tilt angle and the axial ratio, which characterize the polarization ellipse. The polarization equation is derived and with certain plausible assumptions it is transformed into a form suitable for numerical computations. Using this equation the wave propagation from a satellite in a quasi-transverse region is simulated on a computer for different electron content values. The records thus obtained are compared with actual records of signals from the BEB satellite, received at São José dos Campos. The simulation reproduces almost every detail of the real received signal. The results and their possible application to communication problems and ionospheric investigation are briefly discussed.