Computer Science – Sound
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jatp...39..263r&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 39, Mar. 1977, p. 263-276. Research supported by the Australian Research G
Computer Science
Sound
F Region, Ionospheric Propagation, Ionospheric Sounding, Propagation Modes, F 1 Region, F 2 Region, Ionospheric Electron Density, Ray Tracing, Refractivity, Sweep Frequency
Scientific paper
Model irregularities in ionization density and their effect on the group path of radio waves reflected at vertical incidence are studied, with emphasis on the effects of changes in the height of the irregularities, and differences between the ordinary and extraordinary modes. An approximate method for arriving at group path changes is examined and evaluated. The accuracy of the integration process used to obtain group path changes is assessed. The actual group path change produced by an irregularity is ascribed to irregularity intensity, thickness, and background gradient; it is least sensitive to intensity. The sensitivity of swept-frequency group path observations to irregularities is examined.
Dyson Peter L.
Robinson Ivor
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