| Abstract: | We present the results of numerical simulation and physical experiments to verify the possibility of generating a virtual superluminal VLF source by HF ionospheric heating with a scanning beam. The detection of VLF emission was carried out for the source created in two ways: | – | - by scanning the HF beam in opposite directions with different velocities and | | – | - by amplitude modulation of a stationary HF beam. | The amplitude-frequency characteristics of signals obtained in the experiments show the possibility of radiation pattern control of the VLF emission excited by a scanning HF beam. Radiophysical Research Institute, Nizhny Novgorod, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 41, No. 3, pp. 298–312, March, 1998. |
