A technique to compare large-scale plasma density inhomogeneities and regions of artificial optical emission
generation in the ionospheric plasma pumped by a powerful HF radio wave has been developed. In the experiment,
the positions of large-scale inhomogeneities were determined by measuring total electron content along the GPS
signal paths; the positions of optical emission generation regions were determined according to the night sky images
recorded by a CCD camera in the 630 nm line. From the analysis of test experiments, it follows that the most probable
regions of glow generation are those ones with plasma density depletions in the ionospheric pumped volume.
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