A Quantitative Model of Ionospheric Electron Density.
Abstract
This annual report is concerned with work in progress on the development of a quantitative global model of the density of electrons, Ne, in the upper atmosphere. Knowledge of the ionosphere electron density is essential for the quantitative determination of radio wave propagation through this region of the earth's environment. Ultimately Ne will be described on a completely physical basis. This approach to the electron density problem has been taken by NRL and should eventually provide the best models of Ne. The purpose of the current contract has been to provide the current best model for the electron density. In order that this model be useful to groups whose function is impacted by ionospheric variability on communications, the model must meet several requirements. First, it must be global (there have been several models developed of Ne for a given latitude of local time region. They all encounter difficulties when attempts are made to link them with models describing other regions). The model must be analytic. There are two reasons for this. First, an analytic model will almost certainly be capable of being described in a computer code that is fast running. Second, the model almost has to be analytic if it is to be used to describe in real time changes in Ne. It is also prudent to use an analytic model to determine total electron content (TEC) by integrating Ne along some path. The model is intended only to describe gross features of the ionosphere and their temperal variations. It is not capable of describing the more isolated rapid fluctuations in Ne that occur in some regions of the ionosphere.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1977
- Accession Number
- ADA038202
Entities
People
- K. A. Pfitzer
- W. P. Olson