International Journal of Geophysics / 2014 / Article / Fig 3

Review Article

Scientific Review on the Ionospheric Absorption and Research Prospects of a Complex Eikonal Model for One-Layer Ionosphere

Figure 3

Plots of the QL nondeviative amplitude absorption [dB], according to the Settimi et al. [11] complex eikonal model (32), (33), and (34) and Rawer’s [12] theory (20a)-(20b), as a function of the frequency (MHz), for both the ordinary and extraordinary rays. The critical frequency at equator assumes the following values: (a)  MHz, (b)  MHz, (c)  MHz, (d)  MHz, (e)  MHz, (f)  MHz, (g)  MHz, and (h)  MHz.