Recovery of the Parameters of the D-Layer of the Ionosphere According to the Amplitude-Phase Measurements on the Dual-Frequency VLF Path

摘要

The paper presents a technique for recovery of the electron concentration profile, based on the two-parameter model of the D-layer of the ionosphere from measurements of the amplitude and phase variations of the VLF radio signal at two frequencies during a solar X-ray flash. Solar X-ray flash of the X8.2 class was processed in accordance with this technique. It was shown that the parameters of the ionosphere during the X-ray flash mainly depend on the radiation flux in the range of 0.05–0.4 nm. The dependence of the parameters of the ionosphere on the flow in the range of 0.1–0.8 nm is expressed to a much lesser extent.