Numerical results of the theory of diffraction of radio waves around the surface of the Earth (selected sections)
Abstract
Tables and graphs, show the results of the calculation of the attenuation factor of the electromagnetic field of radio waves with horizontal and vertical polarizations in the case of their normal propagation around the Earth. The main calculations of the attenuation factor are made in sequence and encompass the areas of the shadow and semishadow. The joining of the diffraction curves with curves based on reflection formulas is investigated. Additional formulas, tables and graphs are given which make it possible with the help of simple operations to make a complete calculation of the normal propagation of radio waves (beginning from the illuminated area and ending with the area of deep shadow). An example is given of the application of the numerical results of the work to the calculation of electric field intensity curves for certain wavelengths.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 May 1982
 Bibcode:
 1982STIN...8233601A
 Keywords:

 Geometrical Theory Of Diffraction;
 Polarized Electromagnetic Radiation;
 Radio Attenuation;
 Wave Diffraction;
 Earth Surface;
 Functions (Mathematics);
 Graphs (Charts);
 Soils;
 Tables (Data);
 Communications and Radar