High Multiple Radio Reflections from the F₂ Layer of the Ionosphere at Brisbane

Abstract

Continuous night-time records of multiple F₂ reflections at normal incidence have been made at a fixed frequency. The echo patterns have been classified, and qualitative explanations given in terms of humped ionization contours, extending the work of Pierce and Mimno (1940). These patterns have been studied also by a variable gain technique. It is concluded that accurate measurements of reflection coefficients cannot be made by this means.