November 1955 | NTIA Technical Report NBS Report 3565
VHF Propagation by Ionospheric Scattering: A Survey of Experimental Results
Richard C. Kirby
Abstract: A brief survey is given of results from an experimental program extending over the last five years to investigate the nature and characteristics of high-loss regular VHF propagation by means of scatteriung and other mechanisms in the lower ionosphere. Short-term characteristics as well as diurnal, seasonal, and geographical variation of the observed signals are described. The results of pulse-determination of height of scattering, space-antenna and polarization experiments, and system are given. The dependence of the strength of the signals on path length, scattering angle and frequency is described. Considerations for communication applications are summarized.
Keywords: ionosphere; VHF; scattering
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