The role of curvature of ionospheric irregularities in transequatorial propagation at VHF
Abstract
The role of curvature of ionospheric irregularities in transequatorial propagation at VHF is investigated by adapting the theory of spread by Booker and Ferguson (1978), which employs backscattering from long field-aligned irregularities of ionization in the F-region. The new theory involves scattering by irregularities in planes perpendicular to the earth's magnetic field combined with coherent behavior along each field line. Results prove sufficient to explain the signal strengths observed experimentally, and in the case of transequatorial scattering, curvature of the field lines results in caustics and foci.
- Publication:
-
In: Symposium on the Effect of the Ionosphere on Radiowave Systems
- Pub Date:
- 1981
- Bibcode:
- 1981eirs.sympS....F
- Keywords:
-
- F Region;
- Ionospheric Disturbances;
- Ionospheric F-Scatter Propagation;
- Spherical Coordinates;
- Transequatorial Propagation;
- Very High Frequencies;
- Backscattering;
- Geomagnetism;
- Magnetic Effects;
- Radio Transmitters;
- Communications and Radar