This book chapter presents a discussion of magnetoionic theory in relation to radiowave propagation in the ionosphere. It begins with the Appleton formula, its properties, and approximations followed by radiowave polarization theory including ordinary-extraordinary wave coupling. Ray direction in a magnetoplasma is also discussed as well as effects of heavy ions. Finally, the chapter closes with the generalization of magnetoionic theory.

Inspec keywords: ionospheric electromagnetic wave propagation; ionosphere; radiowave propagation; electromagnetic wave polarisation

Other keywords: ray direction; Appleton formula; magnetoionic theory; heavy ion effects; radiowave polarization theory; ionospheric radiowave propagation; magnetoplasma; ordinary-extraordinary wave coupling

Subjects: Ionospheric electromagnetic wave propagation