VLF.Transmitters

List of known VLF transmitters

List of known powerfull VLF transmitters contains more than 30 names. They are presented on map below, but not all of them can be detected by DEMETER satellite.

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Recognized transmitters

The main goal of this work is investigation on electromagnetic signals in VLF range. The choice of spectrum frequency, from 10 kHz up to 20 kHz, for analyses is strictly associated with the net of VLF transmitters situated in different world regions. From the long list of known transmitters only a few were recognized with DEMETER satellite data and this helped to specify those areas, where further statistical studies were lead.
Signal transmitted from ground based VLF stations is shown on signal global maps.

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Recognized transmitters

Animation presented above, consists of 204 slides, where each is made for one frequency from spectrum. With this map, we were able to recognize and identify powerful and working transmitters. They are listed in left column.