Some results of synchronous experimental study of artificial F-spread at radiophysical test sites in nizhny novgorod province
Abstract
We show some results of experiments on synchronous sounding of the ionosphere by short-wave signals at the Radiophysical Research Institute’s test site in Zimenki and Vasil’sursk, Nizhniy Novgorod province, during ionospheric modification by high-power short radiowaves from transmitters of the “Sura” facility in Vasil’sursk. In the course of experiments we proved directly the decisive role of large-scale inhomogeneities of the ionospheric plasma with dimensions of from several kilometers to several dozens of kilometers in the formation of artificial F- spread. The small-scale inhomogeneities with dimensions smaller than 1 km, which are localized in a relatively thin layer near the reflection level of a high-power short radiowave, emerged only at sounding waves, propagating (reflected) in the immediate vicinity of the center of the heating region.
- Publication:
-
Radiophysics and Quantum Electronics
- Pub Date:
- June 1997
- DOI:
- 10.1007/BF02675919
- Bibcode:
- 1997R&QE...40..456A