Ground Clutter Deducting Technique for Irkutsk Incoherent Scatter Radar

Tashlykov, Viktor; Setov, Artem; Medvedev, Andrey; Лебедев, В. Ф.; Kushnarev, Dmitriy

doi:10.1109/rwp.2019.8810369

“…For this reason, hereinafter we use a single-layer model of electron density profile for the F2-layer height range. Methods of noise subtraction from terrain objects are currently being developed for IISR [Tashlykov et al, 2019], which implies a complication of the electron density profile model in use.…”

Section: Structure Of the New Methodsmentioning

confidence: 99%

FEATURES OF Ne RECOVERY AT THE IRKUTSK INCOHERENT SCATTER RADAR

Алсаткин

¹

,

Medvedev

²

,

Ratovsky

³

2020

Solar-Terrestrial Physics

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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.

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“…По этой причине в дальнейшем используется однослойная модель профиля электронной концентрации для диапазона высот слоя F2. В настоящее время для ИРНР разрабатываются методы вычитания помех от объектов рельефа местности [Tashlykov et al, 2019], что предполагает усложнение используемой модели профиля электронной концентрации.…”

Section: структура нового методаunclassified

Features of Ne recovery at the Irkutsk Incoherent Scatter Radar

Алсаткин

¹

,

Medvedev

²

,

Ratovsky

³

2020

Solnechno-Zemnaya Fizika

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1

0

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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.

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