USE OF MATHEMATICAL MODELS OF THE IONOSPHERE FOR STUDYING 
THE PROPAGATION OF ELECTROMAGNETIC WAVES

S. A. Ishanov,a} E. I. Levanov,b}
V. V. Medvedev,a} V. A. Zalesskaya,a}
and K. I. Novikovaa}

UDC 622.276

Using theoretical and experimental models, the results 
of a computational experiment on the propagation of radiowaves are 
presented. It is shown that to more accurately calculate the angle 
of arrival, it is necessary to take into account the lower ionosphere, 
i.e., the D region.

a}I. Kant Russian State University, 14 Nevskii Str., 
Kaliningrad, 236041, Russia; email: valentina_z_11@mail.ru; 
b}Institute of Mathematical Modeling, Russian Academy 
of Sciences, 4A Miusskaya Squ., 125047, Russia. Translated 
from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 6, pp. 1198-1202, 
November-December, 2008. Original article submitted June 1, 2007; 
revision submitted February 2, 2008.