Refraction effects on magnetic field geometry and HF propagation

Details Refraction effects on magnetic field geometry and HF propagation Refraction effects on magnetic field geometry and HF propagation

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jatp...37..751m&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 37, May 1975, p. 751-760.

Physics

Atmospheric Refraction, Ionospheric Propagation, Magnetic Field Configurations, Wave Propagation, Atmospheric Models, Geomagnetism, High Frequencies, Propagation Modes, Ray Tracing, Refractivity, Spherical Harmonics, Troposphere

Scientific paper

An evaluation is made of the effects of tropospheric and ionospheric refraction on determining the angle between the direction of propagation and the direction of the lines of force of the earth's magnetic field. The effect of tropospheric refraction on HF propagation is also investigated. The tropospheric refractivity model is defined in terms of the CRPL Reference Refractivity Atmosphere - 1958, while the electron density in the ionosphere is represented by the Chapman model. The earth's magnetic field is approximated by a series of spherical harmonics. Ray tracings are performed based on the assumption that the propagation media are stratified into layers of constant refractive index. Magnetic field-orientation calculations are presented for a midlatitude location.

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