FARADAY ROTATION NEAR THE TRANSVERSE REGION OF THE IONOSPHERE
Abstract
It is shown that some of the equations usually used to describe Faraday rotation are incorrect for the case of propagation through an aniso tropic magnetic field when the cosine of the angle between the magnetic field and the wave normal changes sign along the ray path. Such a case is common when transmissions are from a high altitude satellite in the region of the ionosphere where the direction of propagation is nearly perpendicular to the earth's magnetic field. Use of the uncorrected equations can result in misinterpretation of the data. The corrected equations are given and are shown to be consistent with measured Faraday rotation. With the corrected equations used in a ray tracing program, an analysis is made of errors resulting from the use of several approximations near the transverse region. The approximations investigated are: (1) quasi-longitudinal propagation, (2) straight line propagation, and (3) use of an effective ionospheric height.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1963
- Accession Number
- AD0406825
Entities
People
- George A. Dulk
Organizations
- Ballistic Research Laboratory