FIXED AZIMUTH SWEEP FREQUENCY BACKSCATTER OBSERVATIONS FROM 27 TO 54 MC/S
Abstract
As a result of a fixed azimuth sweep frequency backscatter observations from 27 to 54 mc performed from December 1960 to June 1961, it was found that transequatorial echoes are of two types: (1) simple two hop propagation supported by high density concentrations at geographic latitudes 5 degrees north and 35 degrees south and (2) propagation of low angle rays supported by the decreasing ionization gradient on the far side of the 5 degree latitude concentration and the increasing gradient side of the 35 degree latitude concentration. Also, echoes at F-2 layer heights whose range is independent of frequency were observed frequently in the south direction looking from Puerto Rico. These echoes are e plained in terms of high density irregularities imbedded in the F-2 layer having durations from a few minutes to a few hours. These irr gulariti s are more frequent on the lower edge of the layer. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1961
- Accession Number
- AD0266105
Entities
People
- B. Dueno
Organizations
- University of Puerto Rico at Mayaguez