Studies of Wavelike Variations in the Ionosphere.
Abstract
Determination of the true height of specific ionospheric plasma frequencies has been used for finding actual motions within the ionospheric plasma. The reported vertical soundings reveal a periodic variation in time at all bottomside altitudes. Spatial variations of this periodic structure have been observed at points separated by about 50 km. Daytime and nighttime periodic structures are different. Periodic variations of angle-of-arrival data of an oblique propagation experiment on a 1330-km circuit have been observed. The periodicities are related to spatial periodic electron density structure in the bottomside ionosphere. The oblique reflections had dominant azimuth periods in the order of 1/4, 1/2, and 1 hour. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1970
- Accession Number
- AD0714993
Entities
People
- F. J. Gorman Jr.
- H. Soicher
- P. R. Arendt
Organizations
- United States Army Communications-Electronics Command