HF Propagation Through Actively Modified Ionospheres
Abstract
We have developed a computer modelling capability to predict the effect of localized electron density perturbations created by chemical releases or high-power radio frequency heating upon oblique, one-hop hf propagation paths. We have included 3-d deterministic descriptions of the depleted or enhanced ionization, including formation, evolution, and drift. We have developed a homing ray trace code to calculate the path of energy propagation through the modified ionosphere in order to predict multipath effects. We also consider the effect of random index of refraction variations using a formalism to calculate the mutual coherence functions for spatial and frequency separations based upon a path integral solution of the parabolic wave equation for a single refracted path through an ionosphere which contains random electron density fluctuations.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 03, 1990
- Accession Number
- ADP006323
Entities
People
- David J. Simons
- John H. Wolcott
- Paul E. Argo
- Ralph Carlson
- Steve Warshaw
- T. J. Fitzgerald
Organizations
- Los Alamos National Laboratory