V.P. Sivokon – Dr.Sc.(Eng.), 

Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS;

Kamchatka state Technical University

E-mail: vsivokon@mail.ru

R.V. Kolesnikov – Ph.D.(Eng.), 

18 CRTI DoD RF

E-mail: natrit@mail.ru

I.V. Demichev – Ph.D. (Eng.), Associate Professor,

Cherepovets Higher Military Engineering School of Radio Electronics

E-mail: cvviur6@mil.ru

Much attention is paid to the research of the ionosphere irregularities. It affects the radio systems and describes the exchange of magnetosphere ionosphere energy. The main measured parameters are propagation velocity and size of ionosphere irregularities. Usually research uses coherent and incoherent scatter radar, satellite tomography, but ordinary researcher cannot use such equipment. In this way, the task of developing methods for researching the ionosphere based on approaches is relevant.

The methods of the antenna systems theory are applicable for assessment of the artificial magnetically oriented irregularities of the ionosphere. It appears as a vibrator and heterogeneities area appears as an re-emitter system.

The magnetically oriented irregularities are extended along the force lines of the Earth’s magnetic field, so their equivalent vibrators will be oriented in the same way. The directivity diagram of the vibrators has an angle equal to the magnetic inclination. The form of the directivity diagram is irregularity length to wavelength ratio. The directivity diagram of the vibrators is symmetrical. Field intensity measured from two directions of one quadrant allows solving the problem of assessment of irregularity length. For research, it is necessary to exclude the influence of the ionosphere on the measurement result. Therefore, an object of research should be within line of sight from both observation points. If the observation points is not at the same distance from the object, then you need to enter the correction index equal to the ratio of distance. The use of the same type of antenna systems and the same type of Software Defined Radio receivers (SDR) allows conducting an experiment remotely without first calibration of transfer characteristics them. The research of the artificial magnetically oriented ionosphere irregularities from Arecibo used SDR in Santo Domingo and Bonaire. The ionosphere was artificial heated at a frequency of 5095 kH. At the same time, the possibility of the signal detection in the USA (Key West, Florida; Highland Falls, New York; Raleigh, NC), and Europe (Greven, Germany; Frassinetto TO, Italy) was tested. The research allowed analyzing the propagation velocity and size of the artificial magnetically oriented ionosphere irregularities using the developed method.

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