Abstract
One of the perspective directions of active impact on the ionosphere is the for-mation of electron concentration irregularities. Such irregularities can be used to increase the efficiency of radar systems and signal transfer in an interlayer ionospheric waveguide. Experiments on Alaska-Antarctica path showed that signal level at a receiving site is de-termined by heating wave parameters. In this case we did not study the character of its level change with time, i.e. possible fading, that is very important for radio-engineering systems. It is known that fading is determined by dimensions and space distribution of irregularity. Observations over EISCAT experiments make it possible, to some degree, to show the character of a scattered signal and the topology of ionospheric magnetically-oriented irregularities in the area of active impact on the ionosphere.
Highlights
Some patents [1,2,3] are known which suggest applying ionospheric artificial irregularities to increase the efficiency of radio-engineering systems
The experiments showed signal intensity variations during heating wave frequency change, it is impossible to estimate signal change in time from the published data that is very important for effective functioning of radio-engineering systems
Energy main flow in the model is concentrated in the scattering cone and only a small portion of it gets into ionospheric waveguide
Summary
Some patents [1,2,3] are known which suggest applying ionospheric artificial irregularities to increase the efficiency of radio-engineering systems. The experiments showed signal intensity variations during heating wave frequency change, it is impossible to estimate signal change in time from the published data that is very important for effective functioning of radio-engineering systems. Analysis of the signals, which we recorded from the Arecibo heating stand during the experiments on generation of artificial magnetically-oriented irregularities, showed significant amplitude fluctuations. To investigate the properties of ionospheric artificial irregularities, we apply SDR (Soft Defined Radio) networks.
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