ON THE RECIPROCITY OF RAYS PROPAGATED THROUGH A HORIZONTALLY STRATIFIED IONOSPHERE

摘要

By employing the theory developed by Booker for the propagation of magneto-ionic wave packets through a horizontally stratified ionosphere, it is shown that the path, time of flight and attenuation of waves transmitted in opposite directions between two stations on the earth are the same. As a simple extension, it is shown that the results are valid for an ionosphere that is tilted with respect to the earth's surface.nA reciprocity theorem for plane waves propagated in the magnetic meridian has been proved by Budden. This work is based upon the full-wave theory, and is therefore valid for all wavelengths. It is shown in this report that under the ray approximation the theorem is valid for propagation in any direction.