Measuring Electrodynamics of the Ionosphere by Digital Ionosondes and Other HF Techniques
Abstract
We conducted a general investigation into radiowave propagation modeling and ionospheric structure in the equatorial region. Techniques were developed to track ionospheric bubbles that form after sunset at or near the magnetic equator. These bubbles were identified as a source of satellite scintillation at 250 MHz. Drift speeds averaging around 100 m/s were observed during the test period in South America. HF propagation on a global scale was modeled using the USAF PRISM model of the ionosphere and rapid ray tracing techniques. These were combined with absorption and noise models to generate operational HF performance maps. Data bases combining global jonosonde measurements were established for the calibration and validation of satellite borne ionospheric measurements. As part of this program, special ionogram scaling and processing techniques were developed for auroral-E traces often observed at high latitudes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 20, 2003
- Accession Number
- ADA419700
Entities
People
- B. W. Reinisch
- Gary Sales
Organizations
- University of Massachusetts Lowell