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Found 14 entries in the Bibliography.
Showing entries from 1 through 14
| 2022 |
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We present the ionospheric disturbance responses over low-latitude regions by using total electron content from Geostationary Earth Orbit (GEO) satellites of the BeiDou Navigation Satellite System (BDS), ionosonde data and Swarm satellite data, during the geomagnetic storm in August 2018. The results show that a prominent total electron content (TEC) enhancement over low-latitude regions is observed during the main phase of the storm. There is a persistent TEC increase lasting for about 1–2 days and a moderately positive d ... Tang, Jun; Gao, Xin; Yang, Dengpan; Zhong, Zhengyu; Huo, Xingliang; Wu, Xuequn; Published by: Remote Sensing Published on: jan YEAR: 2022 DOI: 10.3390/rs14092272 BDS-GEO; differential code biases; geomagnetic storm; Ionospheric disturbance; TEC |
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By using Wuhan VHF radar, we show the morphological features of E-region field-aligned irregularity (FAI) occurrence at Wuhan during 2015–2020. Statistical results present that E-region FAI occurrence reaches a maximum after sunset in summer season. According to Doppler spectrum features, type-2 irregularity is predominantly observed at Wuhan. In addition, we observed a remarkable correlation between E-region FAI occurrence and geomagnetic activity, which includes periods of positive correlation and negative correlation de ... Liu, Yi; Zhou, Chen; Xu, Tong; Deng, Zhongxin; Du, Zhitao; Lan, Ting; Tang, Qiong; Zhu, Yunzhou; Wang, Zhuangkai; Zhao, Zhengyu; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2022 DOI: 10.1029/2021JA029597 |
| 2021 |
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A ROTI-Aided Equatorial Plasma Bubbles Detection Method In this study, we present a Rate of Total Electron Content Index (ROTI)-aided equatorial plasma bubbles (EPBs) detection method based on a Global Navigation Satellite System (GNSS) ionospheric Total Electron Content (TEC). This technique seeks the EPBs occurrence time according to the ROTI values and then extracts the detrended ionospheric TEC series, which include EPBs signals using a low-order, partial polynomial fitting strategy. The EPBs over the Hong Kong area during the year of 2014 were detected using this technique. ... Tang, Long; Louis, Osei-Poku; Chen, Wu; Chen, Mingli; Published by: Remote Sensing Published on: jan YEAR: 2021 DOI: 10.3390/rs13214356 Ionosphere; detection method; equatorial plasma bubbles; GNSS; ROTI |
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By using the data of GNSS (Global Navigation Satellite System) observation from Crustal Movement Observation Network of China (CMONOC), ionospheric electron density (IED) distributions reconstructed by using computerized ionospheric tomography (CIT) technique are used to investigate the ionospheric storm effects over Wuhan region during 17 March and 22 June 2015 geomagnetic storm periods. F-region critical frequency (foF2) at Wuhan ionosonde station shows an obvious decrease during recovery phase of the St. Patrick’s Day g ... Feng, Jian; Zhou, Yufeng; Zhou, Yan; Gao, Shuaihe; Zhou, Chen; Tang, Qiong; Liu, Yi; Published by: Advances in Space Research Published on: jan YEAR: 2021 DOI: 10.1016/j.asr.2020.10.008 Ionospheric electron density distributions; ionospheric storm effects; Multiplication algebraic reconstruction technique |
| 2014 |
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A specific imaging spectrometer based on a concentric off-axis dual reflector system is proposed, free of astigmatism and coma. The described imaging spectrometer consists of four spherical mirrors and a plane grating. The analytic theory of aberrations and the optical path-length concept are used to derive the astigmatism elimination and coma removal. It is shown that the astigmatism in these imaging spectrometers is eliminated by characterizing three angles, and the coma is corrected when unequal mirror radii are config ... Chen, Ting; Tang, Yi; Zhang, Li; Chang, Yue; Zheng, Cheng; Published by: Applied Optics Published on: 01/2014 YEAR: 2014 DOI: 10.1364/AO.53.000565 |
| 2013 |
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Retrieving ionospheric electron density profile from FUV spectral remote sensing measurements
WANG, Jing; Tang, Yi; ZHANG, Zhi-Ge; ZHENG, Xu-Li; Ni, Guo-qiang; Published by: Chinese Journal of Geophysics Published on: |
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A Quality Assessment Method for Retrieved O/N\_2 Images from FUV Remote Sensing
WANG, Jing; Tang, Yi; Peng, Sheng-feng; ZHENG, Xu-Li; Ni, Guo-qiang; Published by: Infrared Published on: |
| 2012 |
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Research on Retrieving Thermospheric O/N2 from FUV Remote Sensing Magnetic storms usually cause significant departures of thermospheric O and N2\ from their normal values. To study the effects on thermospheric neutral species caused by magnetic storms, a method to retrieve thermospheric O/N2\ based on the data obtained from global ultraviolet imager on board TIMED is presented. With the help of AURIC, the normalizations of observing angles and SZAs were preformed to the measurements and a relationship between 135.6/LBHs and O/N2\ was estab ... Peng, S.; Tang, Y.; Wang, J.; Zheng, X.; Published by: Spectroscopy and Spectral Analysis Published on: 05/2012 YEAR: 2012 DOI: 10.3964/j.issn.1000-0593(2012)05-1296-05 |
| 2010 |
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The ground calibration of far ultraviolet scanning imaging spectrometer (FUSIS) The far ultraviolet scanning imaging spectrometer (FUSIS) is used to measure the composition and distribution of the main molecules and atoms in the Earth s upper atmosphere. It is an important instrument in investigation of the physical and chemical processes in the Earth s upper atmosphere. FUSIS works between 120nm to 180nm, its spectral resolution is better than 1.0nm and its spatial resolution is 8 pixels. This paper describes a kind of ground calibration method and facility of FUSIS. The FUV light is invisible, so all ... Wu, Yan; Tang, Yi; Liu, Jianpeng; Zhang, Zhige; Ni, Guoqiang; Published by: Published on: YEAR: 2010 DOI: 10.1117/12.870475 |
| 2009 |
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Retrieval of ionospheric O/N Solar storms in the ionosphere have a great impact on human\textquoterights life. It\textquoterights of great significance to find an effective way for an accurate prediction of solar storms. In this paper, we present a method based on GUVI FUV day-glow imaging data to derive O/N2, an environmental parameter used to forecast Space Weather. In the retrieval, we selected two channels of the FUV wavelengths, OI135.6nm and LBH2. In accordance with the linear relationship between O/N2 and 135.6/LBH, we pr ... Jing, Wang; Tang, Yi; Tang, Li-jun; Ni, Guo-qiang; Published by: Published on: YEAR: 2009 DOI: 10.1117/12.833985 |
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Retrieval of ionospheric O/N Solar storms in the ionosphere have a great impact on human\textquoterights life. It\textquoterights of great significance to find an effective way for an accurate prediction of solar storms. In this paper, we present a method based on GUVI FUV day-glow imaging data to derive O/N2, an environmental parameter used to forecast Space Weather. In the retrieval, we selected two channels of the FUV wavelengths, OI135.6nm and LBH2. In accordance with the linear relationship between O/N2 and 135.6/LBH, we pr ... Jing, Wang; Tang, Yi; Tang, Li-jun; Ni, Guo-qiang; Published by: Published on: YEAR: 2009 DOI: 10.1117/12.833985 |
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Design of FUV imaging spectrometer based on crossed Czerny-Turner structure This article describes the characteristics of the far ultraviolet (FUV) radiation and its applications in the space weather s research and prediction. The FUV imaging spectrometer is irreplaceable to get the FUV radiation data of the earth s upper atmosphere. Some key technologies of FUV spectrometer are analyzed respectively, including window materials, FUV light source, FUV detectors and FUV coating, which offer theoretical foundation for FUV imaging spectrometer. The paper presents a FUV band imaging spectrometer s optica ... Wu, Yan; Tang, Yi; Ni, Guoqiang; Sheng, Yunlong; Wang, Yongtian; Zeng, Lijiang; Published by: Published on: YEAR: 2009 DOI: 10.1117/12.806967 space weather; far ultraviolet; Imaging spectrometer; crossed Czerny-Turner system; optical design |
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Retrieval of ionospheric O/N2 based on FUV imaging data
Jing, Wang; Tang, Yi; Tang, Li-jun; Ni, Guo-qiang; Published by: Published on: |
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Retrieval of ionospheric O/N2 based on FUV imaging data
Jing, Wang; Tang, Yi; Tang, Li-jun; Ni, Guo-qiang; Published by: Published on: |
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