Solar interference with lunar communications (1968-1973)

Abstract

Preliminary calculations are made to determine the effect of solar radio interference on reception from lunar-based transmitters. The magnitude of the noise received from the sun is calculated. Based on an assumed antenna gain pattern, an estimate is made of the proximity with which a 30-foot parabolic antenna may be pointed toward the sun without exceeding certain noise criteria. Finally, the near eclipses of the sun by the moon are plotted to demonstrate the frequency of occurrence of potential solar blackouts of lunar communications and the duration of each blackout.