Physics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rpeee...7....8y&link_type=abstract
In its USSR Rept.: Electron. and Elec. Eng. (JPRS-UEE-84-015) p 8-9 (SEE N85-33314 22-33) Transl. into ENGLISH from Radiotekhn
Physics
Radio Transmission, Signal Processing, Solar Activity, Solar Corona, Solar Cycles, Spacecraft Communication, Wave Propagation, Electrons, Line Spectra, Refractivity, Solar Wind, Wave Scattering
Scientific paper
Observations of signals from space vehicles are analyzed in order to identify long-term changes in radio wave propagation conditions in the plasma near the Sun and the factors underlying these changes. It is found that there are long-term changes in propagation conditions with periods of several years, in addition to short-term variations with characteristic times of 5 to 20 days. These changes are caused by variations in the density of the plasma flux in the path of the radio waves. As the electron concentration increases so do the irregularities in the index of refraction, which cause increased radio wave scattering and increased amplitude and phase fluctuations, as well as broadening of the spectral line.
Rogalskiy V. I.
Shtrykov V. K.
Yakovlev O. I.
Yefimov A. I.
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