Highlights Vertical and oblique ionograms with the presence of Es layer in the ionosphere were simulated. The “cloud” model of Es layer was implemented in HF propagation model (NIM-RT). Modified NIM-RT code was exploited in ionogram simulations. Assessment of parameters defining Es features (virtual height and transparency level) was attained.
Abstract The methodology making available an analysis of high frequency (HF) wave propagation in ionosphere with the presence of sporadic E layer (Es) is presented. A numerical ray tracing code is exploited to estimate the ray-paths through ionosphere comprising E, Es, F1 and F2 layers. A number of vertical and oblique sounding ionograms were emulated in the frame of NIM-RT propagation model. Fairly good resemblance between measured and simulated ionograms with the presence of Es layer was achieved. Numerical modelling provides an assessment of a number of parameters defining Es layer features including virtual height of the layer and its transparency.
Oblique and vertical incidence ionogram simulations with the presence of Es layer
Advances in Space Research ; 66 , 7 ; 1713-1723
2020-05-31
11 pages
Article (Journal)
Electronic Resource
English
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