THE DOPPLER EFFECT IN DISPERSIVE, INHOMOGENEOUS MEDIA WITH APPLICATIONS TO ELECTROMAGNETIC WAVES IN IONIZED MEDIA
Abstract
This study concerns the Doppler effect and its application to dispersive, anisotropic and inhomogeneous media. The isotropic ionosphere was chosen for research as a primary characteristic example of a resonant medium, even though mechanical sources, like satellites, can not attain the velocities required for irregular modes to appear with any strength in such a simple medium. It is shown, that the Doppler modes may become focused or defocused, depending upon the special conditions prevailing. The focusing effect is also described graphically. This representation yields immediate information regarding the possible presence of irregular ''Doppler modes''. The complex Doppler effect is studied by means of geometrical optics. This serves as an introduction to the full wave treatment, which in its turn yields the true field intensities and the focusing effects. The geometrical methods were also extended to the more complicated case of the magneto ionic medium. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1960
- Accession Number
- AD0258427
Entities
People
- O.e.h. Rydbeck
Organizations
- Chalmers University of Technology