Fluctuations in frequency of coherent radio signals in solar plasma according to Venera-15 and Venera-16 data
Abstract
Frequency difference fluctuations of coherent radio signals (32 and 8 cm) scattered by the circumsolar plasma were measured by dispersion interferometry during May to July 1984. Standard deviations of the fluctuations decrease with increasing averaging time according to a power law and increase with approach to the Sun as exponent beta = -1.9. A regular shift of the frequency difference due to the motion of the radio beam with respect to the Sun was observed. The spatial spectrum of plasma turbulence was close to the Kolmogoroff-Obukhov spectrum for frequencies between 0.004 and 0.2 Hz.
- Publication:
-
JPRS Report Science Technology USSR Space
- Pub Date:
- November 1987
- Bibcode:
- 1987RpScT.......68S
- Keywords:
-
- Coherent Electromagnetic Radiation;
- Plasma Turbulence;
- Plasma-Electromagnetic Interaction;
- Radio Frequencies;
- Radio Signals;
- Solar Wind;
- Radio Scattering;
- Spaceborne Astronomy;
- Venera Satellites;
- Communications and Radar