Выявление волновых возмущений концентрации электронов в вариациях мощности некогерентно рассеянного сигнала

Abstract

We estimated the effect of the relative amplitudes and initial phases of harmonic variations in the electron density, electron and ion temperatures on the relative power amplitudes of incoherent scatter (IS) signal. We obtained its dependence from the relative amplitudes of the ionospheric parameters (assuming they to be much less than unity), and the initial phase of the harmonic variations. It is shown that if the electron and ion temperatures vary in phase with the same relative amplitudes, the relative amplitude of the IS power signal is equal to a relative amplitude of the electron density. We performed a computer simulation and calculated the relative biases of estimates of the electron density relative amplitudes. The maximum relative bias in determining the relative amplitudes of quasi-harmonic variations of the electron density is demonstrated to not exceed generally 0.4 – 0.5 for the relations between ionospheric parameters from the published literature.