Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 36820 10.12737/stp-61202009 Results of current research Results of current research Results of current research Features of Ne recovery at the Irkutsk Incoherent Scatter Radar Features of Ne recovery at the Irkutsk Incoherent Scatter Radar Алсаткин Сергей Сергеевич Alsatkin Sergei Sergeevich alss@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 https://orcid.org/0000-0003-0660-8474 Медведев Андрей Всеволодович Medvedev Andrey Vsevolodovich medvedev@iszf.irk.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 https://orcid.org/0000-0002-0847-3553 Ратовский Константин Геннадьевич Ratovsky Konstantin Gennadyevich ratovsky@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar-Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar-Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar-Terrestrial Physics SB RAS Irkutsk Russian Federation 6 1 77 88 https://naukaru.ru/en/nauka/article/36820/view

The article presents a new method of restoring the electron density profile (Ne) according to data from the Irkutsk Incoherent Scatter Radar (IISR). This method has been developed taking into account the Faraday rotation of the polarization plane, which leads to fading at the output of the IISR linearly polarized antenna. The concept of the method consists in fitting a height variation of electron density by a parametric model. As the model, a combination of two Chapman layers was used. This approach made it possible to implement a fully automatic data processing mode and increase the stability of the recovery of the Ne profile, especially according to data obtained during a period of low solar activity when the signal-to-noise ratio is low. Accuracy was increased by eliminating a number of operations leading to instability of data recovery in the presence of noise. The new method enabled fully automatic processing of long data series in the period 2007–2015.

The article presents a new method of restoring the electron density profile (Ne) according to data from the Irkutsk Incoherent Scatter Radar (IISR). This method has been developed taking into account the Faraday rotation of the polarization plane, which leads to fading at the output of the IISR linearly polarized antenna. The concept of the method consists in fitting a height variation of electron density by a parametric model. As the model, a combination of two Chapman layers was used. This approach made it possible to implement a fully automatic data processing mode and increase the stability of the recovery of the Ne profile, especially according to data obtained during a period of low solar activity when the signal-to-noise ratio is low. Accuracy was increased by eliminating a number of operations leading to instability of data recovery in the presence of noise. The new method enabled fully automatic processing of long data series in the period 2007–2015.

 incoherent scatter ionosphere electron density Chapman layer incoherent scatter ionosphere electron density Chapman layer

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