Backscatter signal model for Irkutsk Incoherent Scatter Radar

Tashlykov, Viktor; Medvedev, Andrei V.; Medvedev, Andrey; Васильев, Роман; Vasilyev, Roman

doi:10.12737/szf-42201805

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Passive observation in continuous mode of sky scanning is a new measurement. It allows us to use the IISR as an effective radio astronomical instrument, which makes it possible to study the dynamics and degree of solar radiation spatial inhomogeneity at about 2 m wavelength and to measure parameters of fine-scale ionospheric irregularities on the basis of registered scintillations of radio signals from discrete space sources (Vasilyev et al, 2017).…”

Section: Passive Observationsmentioning

confidence: 99%

Irkutsk Incoherent Scatter Radar: history, present and future

Medvedev

Potekhin

2019

Hist. Geo Space. Sci.

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Abstract. The article focuses on the history of ionospheric research using the incoherent scatter method at the Institute of Solar-Terrestrial Physics and development of the only incoherent scatter radar in Russia, which is located near Irkutsk. It describes the radar features and the current situation of research at the Irkutsk Incoherent Scatter Radar (IISR). Operating modes and types of measurements of the radar are specified. There is a brief description of the original measurement techniques that were developed considering the IISR features such as the frequency principle of scanning and receiving of one linear polarization of a scattered signal. The main feature of the IISR is the possibility of obtaining absolute values of the ionospheric plasma electron density. The automatic method for constructing the electron density vertical profile is based on registration of vertical profiles of a rotation phase of the polarization plane of a scattered signal. The method does not require calibration with additional facilities.

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Section: Passive Observationsmentioning

confidence: 99%

Irkutsk Incoherent Scatter Radar: history, present and future

Medvedev

Potekhin

2019

Hist. Geo Space. Sci.

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Estimated plasmasphere electron content and O⁺/H⁺ transition height during the February 2022 geomagnetic storm from Irkutsk IS radar data

Khabituev,

Zherebtsov,

Ivonin

et al. 2024

Solnechno-Zemnaya Fizika

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We study the topside ionosphere above the NmF2 ionization maximum and the transition region between the ionosphere and the plasmasphere. We analyze the interaction between the topside ionosphere and the plasmasphere during a strong geomagnetic storm in February 2022, using data from the Irkutsk Incoherent Scatter Radar (IISR) and total electron content data from global navigation satellite systems. To determine the ionosphere and plasmasphere electron contents, an original technique is employed to calculate the integral content of ion density from IISR data, which takes into account the two-component composition of ionospheric plasma. We compare different functions of approximation of the topside ionosphere. The original technique was adjusted for use with IISR Ne data fitted based on the β-Chapman profile. We compare the plasmasphere electron content during quiet and magnetically disturbed days, as well as the dynamics of the O⁺/H⁺ transition height, which is the upper boundary of the ionosphere and the lower boundary of the plasmasphere.

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Ionospheric disturbances over Eastern Siberia during April 12–15, 2016 geomagnetic storms

Rubtsov

Maletckii

Danilchuk

et al. 2020

Solnechno-Zemnaya Fizika

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We present the results of the complex study of ionospheric parameter variations during two geomagnetic storms, which occurred on April 12–15, 2016. The study is based on data from a set of radiophysical and optical instruments. Both the storms with no sudden commencement were generated by high-speed streams from a coronal hole. Despite the minor intensity of the storms (Dst ≥ –55 and –59 nT), we have revealed a distinct ionospheric response to these disturbances. A negative response of electron density and F2-layer critical frequency was observed during the main phase of both the storms. The amplitude of the negative response was higher for the second storm. The period of negative electron density deviations was accompanied by an increase in the peak height, as well as by the downward plasma drift in the evening and night hours, which is not typical of quiet conditions. We have also recorded sharp peaks in the AATR (Along Arc TEC Rate) index and in total electron content noise spikes on average 2–2.5 times. This indicates an intensification of small-scale ionospheric disturbances caused by disturbed geomagnetic conditions and high substorm activity.

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Backscatter signal model for Irkutsk Incoherent Scatter Radar

Cited by 3 publications

References 13 publications

Irkutsk Incoherent Scatter Radar: history, present and future

Irkutsk Incoherent Scatter Radar: history, present and future

Estimated plasmasphere electron content and O⁺/H⁺ transition height during the February 2022 geomagnetic storm from Irkutsk IS radar data

Ionospheric disturbances over Eastern Siberia during April 12–15, 2016 geomagnetic storms

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