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The electron velocity distribution function and the incoherent scatter spectra during ionospheric heating in low ionosphere region are presented with consideration of the elastic collision between electrons and neural particles and the excitation of rotation energy level. The effects of pump frequency and electric fields on the spectra are discussed. With the increase of electric field, the non-Maxwellian feature is enhanced, and with the increase of heating frequency, the non-Maxwellian feature is weak- ened. The non-Maxwellian factor will bring a large error in ionosphere parameters, which must be con- sidered in the inversion.
The electron velocity distribution function and the incoherent scatter spectra during ionospheric heating in low ionosphere regions are presented with the consideration of the elastic collision between electrons and neural particles and the excitation of rotation energy level. The effects of pump frequency and electric fields on the spectra are With the increase of electric field, the non-Maxwellian feature is enhanced, and with the increase of heating frequency, the non-Maxwellian factor is weak- ened. The non-Maxwellian factor will bring a large error in ionosphere parameters, which must be con- sidered in the inversion.