Ionospheric Modeling and Propagation Analysis.
Abstract
This report describes several studies performed toward improving our knowledge of the properties of High-Frequency communication circuits. These studies included the development of three dimensional electron density models and the analysis of various propagation modes in the ionosphere. Several vertical electron density models were constructed that proved to be useful in both global and polar region HF applications. Improvements were made to existing models for individual ionospheric layer parameters. Some of the properties of long range ducted modes have been isolated using ray tracing techniques. The relative probability of establishing and maintaining ducted modes as a function of HF circuit parameters for various ionospheric conditions has been explored. The stability of these modes for small perturbations to the ambient ionosphere has also been studied. Injection into ionospheric ducts by artificially heating localized regions of the ionosphere has been investigated. Spatial distributions and intensity patterns have been obtained for irregularities in the electron density which align themselves with the local geomagnetic field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1978
- Accession Number
- ADA062998
Entities
People
- David C. Miller
- Joseph Gibbs