Effects of Scintillation on Synchronous Satellite Communication Signals at 250 MHz.
Abstract
The effects of the phenomenon of scintillation on synchronous satellite communication signals at 250 MHz are determined. Thin-phase-diffracting-screen theory is used to convert to 250 MHz scintillation data observed at 136 MHz. The following findings are made: (1) for weak scattering and no magnetic field, scintillation is a serious limitation at zenith angles larger than 50 degrees; (2) at 250 MHz, the range of frequencies over which amplitude scintillations are highly correlated is extremely wide for weak scattering but much narrower for strong scattering; (3) the distance for which correlation between spaced receivers on the ground falls to 50 percent is less than 1.1 km for weak scattering and less than 0.675 for strong scattering; (4) the periods of fading range from 6 to 60 sec. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 16, 1970
- Accession Number
- AD0880928
Entities
People
- David B. Sailors
Organizations
- Navy Electronics Laboratory