Accession Number : AD0874266

Title :   Comparison of Waveguide and Wave Hop Techniques for VLF Propagation Modeling,

Descriptive Note : Technical publication,

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CA

Personal Author(s) : Morfitt, David G. ; Halley, R. F.

Report Date : AUG 1970

Pagination or Media Count : 58

Abstract : Several mathematical models for describing VLF radio wave propagation in the earth-ionosphere waveguide have been presented in the literature. The Wave Hop model and the Waveguide mode model are investigated. The computerized versions of these propagation models are examined by comparing the computed electric field strengths obtained for each model when using the same input parameters. It is found that the two models as they now exist do not produce exactly the same computational results and the degree of difference between the two computations is dependent upon propagation frequency and the electron density profile used for the ionosphere. (Author)

Descriptors :   (*RADIO WAVES, IONOSPHERIC PROPAGATION), VERY LOW FREQUENCY, MATHEMATICAL MODELS, ELECTRIC FIELDS, ELECTRON DENSITY.

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE