Comparative quality analysis of models of total electron content in the ionosphere

Ivanov, V. B.; Gorbachev, O. A.; Kholmogorov, A. A.

doi:10.1134/s0016793216030075

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…Ivanov et al [ 36 ] showed that GEMTEC overperformed the Klobuchar model for 2003–2012 (at the Asian mid-latitudes). Because GEMTEC is a GIM-based model involving data up to 2012, we could expect a reduction in its precision after that period.…”

Section: Discussionmentioning

confidence: 99%

Klobuchar, NeQuickG, BDGIM, GLONASS, IRI-2016, IRI-2012, IRI-Plas, NeQuick2, and GEMTEC Ionospheric Models: A Comparison in Total Electron Content and Positioning Domains

Yasyukevich

Zatolokin

Padokhin

et al. 2023

Sensors

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Global navigation satellite systems (GNSS) provide a great data source about the ionosphere state. These data can be used for testing ionosphere models. We studied the performance of nine ionospheric models (Klobuchar, NeQuickG, BDGIM, GLONASS, IRI-2016, IRI-2012, IRI-Plas, NeQuick2, and GEMTEC) both in the total electron content (TEC) domain—i.e., how precise the models calculate TEC—and in the positioning error domain—i.e., how the models improve single frequency positioning. The whole data set covers 20 years (2000–2020) from 13 GNSS stations, but the main analysis involves data during 2014–2020 when calculations are available from all the models. We used single-frequency positioning without ionospheric correction and with correction via global ionospheric maps (IGSG) data as expected limits for errors. Improvements against noncorrected solution were as follows: GIM IGSG—22.0%, BDGIM—15.3%, NeQuick2—13.8%, GEMTEC—13.3%, NeQuickG and IRI-2016—13.3%, Klobuchar—13.2%, IRI-2012—11.6%, IRI-Plas—8.0%, GLONASS—7.3%. TEC bias and mean absolute TEC errors for the models are as follows: GEMTEC—−0.3 and 2.4 TECU, BDGIM—−0.7 and 2.9 TECU, NeQuick2—−1.2 and 3.5 TECU, IRI-2012—−1.5 and 3.2 TECU, NeQuickG—−1.5 and 3.5 TECU, IRI-2016—−1.8 and 3.2 TECU, Klobuchar—1.2 and 4.9 TECU, GLONASS—−1.9 and 4.8 TECU, and IRI-Plas—3.1 and 4.2 TECU. While TEC and positioning domains differ, new-generation operational models (BDGIM and NeQuickG) could overperform or at least be at the same level as classical empirical models.

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Section: Discussionmentioning

confidence: 99%

Klobuchar, NeQuickG, BDGIM, GLONASS, IRI-2016, IRI-2012, IRI-Plas, NeQuick2, and GEMTEC Ionospheric Models: A Comparison in Total Electron Content and Positioning Domains

Yasyukevich

Zatolokin

Padokhin

et al. 2023

Sensors

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“…Детальное описание модели GEMTEC представлено в статье [Ivanov et al, 2011]. Лежащий в ее основе метод главных компонент позволяет существенно сжать исходный массив данных и отфильтровать содержащиеся в них шумовые флуктуации.…”

Section: тестирование модели Gemtecunclassified

“…Две такие модели были разработаны практически одновременно и независимо несколько лет назад. Речь идет о модели NTCM_GL [Jakowski et al, 2011] и созданной авторами данной статьи модели GEMTEC [Ivanov et al, 2011].…”

Section: Introductionunclassified

“…В модели GEMTEC используется разложение исходных данных по естественным ортогональным функциям (метод главных компонент) . Сравнительный анализ этих двух моделей, представленный в [Ivanov et al, 2016], показал преимущество модели GEMTEC. Однако представляется интересным оценить эффективность модели GEMTEC непосредственно при решении навигационной задачи.…”

Section: Introductionunclassified

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Solving a navigation problem with the total electron content model GEMTEC

Kholmogorov¹,

Ivanov²,

Gorbachev³

2019

Solnechno-Zemnaya Fizika

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This article explores the possibility of improving the accuracy of positioning in single-frequency satellite radio navigation equipment through the use of an empirical model of the total electronic content GEMTEC. The effectiveness of this model is compared with that of the Klobuchar model, which is recommended for the GPS interface control document. We conducted testing at our observation points, using data from the international network of IGS stations in the GPS system. The use of the international network allowed us to select a long period of time for the testing from 2001 to 2017. As a result, it was shown that the GEMTEC model significantly reduces the average positioning errors as compared to the Klobuchar model. We also demonstrate the possibility of introducing the GEMTEC model and its full-featured use in single-frequency home-class receivers, for example, in the Russian receiver MNP-M7.

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Possibility of correcting ionospheric model, using data from single-frequency receivers of global navigation satellite systems

Sazhin

Unuchkov

2017

23rd International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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Comparative quality analysis of models of total electron content in the ionosphere

Cited by 4 publications

References 5 publications

Klobuchar, NeQuickG, BDGIM, GLONASS, IRI-2016, IRI-2012, IRI-Plas, NeQuick2, and GEMTEC Ionospheric Models: A Comparison in Total Electron Content and Positioning Domains

Klobuchar, NeQuickG, BDGIM, GLONASS, IRI-2016, IRI-2012, IRI-Plas, NeQuick2, and GEMTEC Ionospheric Models: A Comparison in Total Electron Content and Positioning Domains

Solving a navigation problem with the total electron content model GEMTEC

Possibility of correcting ionospheric model, using data from single-frequency receivers of global navigation satellite systems

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