An Investigation of Methods for Improving Models of Ionospheric Plasma- Density Irregularities and Radio-Frequency Scintillation
Abstract
Many modern military systems used for communications, command and control, navigation, and surveillance depend on reliable and relatively noise- free transmission of radiowave signals through the earth's ionosphere. Small- scale irregularities in the ionospheric density can cause severe distortion, known as radiowave scintillation, of both the amplitude and phase of these signals. The WBMOD computer program can be used to estimate these effects on a wide range of systems. The objective of this study is to investigate improvements to the WBMOD model based on extensive data sets covering both the equatorial and high-latitude regimes. This report summarizes the work completed during the first year, which includes construction of the modeling database, development of a new format for the internal representation of the irregularity strength, and development of new models for the diurnal, latitudinal, seasonal, and longitudinal variations in the equatorial region.... Ionosphere, Ionospheric scintillation, Radiowave scintillation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1993
- Accession Number
- ADA264156
Entities
People
- Edward J. Fremouw
- James A. Secan
- Lee A. Reinleitner
- Robert M. Bussey
Organizations
- Northwest Research Associates