M. M. Denisov

A. A. Borodinskiy, V. V. Zemlyakov, A. M. Lerer, G. P. Siniavskiy

A.A. Vasiliev, N.A. Pantelyuk, I.V. Fokin, A.Y. Perlov

A.V. Popov - Dr.Sc. (Phys.-Math.), Head of Department, Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN) (Moscow, Troitsk). E-mail: popov@izmiran.ru I.V. Prokopovich - Post-graduate Student Junior Research Scientist, Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN) (Moscow, Troitsk). E-mail: prokop21@mail.ru

L.S. Chudnovsky1, V.Yu. Krylov2

1,2 JSC “Precision Systems and Instruments” (Moscow, Russia)