Accession Number : AD0841424

Title :   RAY TRACING INVESTIGATION OF THE MAGNETOIONIC EFFECT ON BEARING DEVIATION IN HF TRANSIONOSPHERIC PROPAGATION.

Descriptive Note : Technical rept.,

Corporate Author : ILLINOIS UNIV AT URBANA RADIO RESEARCH LAB

Personal Author(s) : Rao, N. Narayana

Report Date : AUG 1968

Pagination or Media Count : 42

Abstract : The influence of an earth centered dipole magnetic field upon bearing deviation of medium range hf ray paths in the ionosphere is investigated by using the ESSA three dimensional computer ray tracing program for a variety of conditions involving quasi-parabolic layer models and actual electron density profiles deduced from ionograms gathered during a direction finding experiment. The adequacy of the dipole model is examined by comparing the bearing deviations obtained from it with those for a magnetic field based upon spherical harmonic expansion using Gaussian coefficients. (Author)

Descriptors :   (*IONOSPHERIC PROPAGATION, MATHEMATICAL MODELS), (*DIRECTION FINDING), GEOMAGNETISM, HIGH FREQUENCY, AZIMUTH, DEFLECTION, COMPUTER PROGRAMS, ELECTRON DENSITY, MAGNETIC FIELDS, DIPOLE MOMENTS, ERRORS.

Subject Categories : Direction Finding
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE