Phase Scintillation Under Weak and Strong Scatter Conditions.
Technical rept. 13 Mar 85-30 Sep 86,
SRI INTERNATIONAL MENLO PARK CA
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Equatorial observations from the DNA Wideband satellite have been analyzed to 1 characterize the two component phase spectral form, and 2 estimate the effects of diffraction on the phase spectrum during strong scatter conditions. The average two component phase spectrum has a low frequency dependence of 1f to the 2.3 power, and 1f to the 3.9 power at high frequencies. These regimes are separated by a spectral break at about 650m. For weak scatter levels up to S sub 4 or 0.5, diffraction errors are less than one radian, and phase spectral shape is independent of carrier frequency. At higher S sub 4 values, the spectrum is affected by diffraction at all spatial frequencies and its shape depends on carrier frequency. Keywords Radio wave scintillation Weak scatter Strong scatter Diffraction effects.
- Radiofrequency Wave Propagation
- Radio Communications