Diffraction from discrete and homogeneously structured ionospheric irregularities

Details Diffraction from discrete and homogeneously structured ionospheric irregularities Diffraction from discrete and homogeneously structured ionospheric irregularities

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979rasc...14...97h&link_type=abstract

Radio Science, vol. 14, Jan.-Feb. 1979, p. 97-102.

Physics

Optics

6

Atmospheric Scattering, Ionospheric Disturbances, Radio Frequency Interference, Radio Transmission, Scintillation, Wave Diffraction, Diffraction Patterns, Frequency Response, Ionospheric Electron Density, Ionospheric Propagation

Scientific paper

Each single irregularity in electron density in the ionosphere has a corresponding transition frequency (fT) which marks the point at which geometric optics for higher frequencies must be replaced by physical optics considerations. It is shown that each irregularity as defined by shape, size, and density gives a fading or scintillation depth which increases as the radio frequency increases, peaking at about 0.6 fT and thereafter decreasing with frequency. A nearly homogeneous assembly of irregularities can produce scintillation which is speciously random. For such an assembly a peak in scintillation depth is also produced just below the mean fT.

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