Experimental Relations Between Ionospheric True Height, Group Height, and Phase Height

Abstract

Computations of ionospheric phase height at a particular frequency have been made using true height analyses of h'f curves. Temporal changes in these computed values agree well with experimentally measured changes of phase path both in the case of regular diurnal variations and during an eclipse. The true height analyses are thus shown to be experimentally reliable, and at the same time we can allot an " absolute" value to the normal phase-path records.