3-D water vapor tomography in Wuhan from GPS, BDS and GLONASS observations

Three-dimensional water vapor can be reconstructed from Global Navigation Satellite System (GNSS) observations, which can study 3-D profile variations of atmospheric water vapor and climate. However, there is a large uncertainty of water vapor tomography from single GPS system observations due to limited satellites. The rapid development of multi-GNSS, including China's Beidou Navigation Satellite System (BDS) and Russia's GLONASS, has greatly improved the geometric distribution of satellite ray-path signals, which may improve the performance of water vapor tomography by combining multi-GNSS. In this paper, 3-D water vapor tomography results are the first time obtained using multi-GNSS data from Continuously Operating Reference Stations (CORS) network in Wuhan, China, whose performances are validated by radiosonde and the latest ECMWF ERA5 reanalysis products. The results show that the integrated multi-GNSS can pronouncedly increase the number of effective signals, and 3-D water vapor results are better than those from the GPS-only system, improving by 5% with GPS + GLONASS or GPS + GLONASS + BDS, while BDS has results that are not improved too much. Therefore, multi-GNSS will enhance the reliability and accuracy of 3-D water vapor tomography, which has more potential applications in the future.

Dergi Adı Remote Sensing
Dergi Cilt Bilgisi 10
Dergi Sayısı 1
Sayfalar -
Yayın Yılı 2018
Eser Adı
[dc.title]
3-D water vapor tomography in Wuhan from GPS, BDS and GLONASS observations
Yazar
[dc.contributor.author]
Dong Z.
Yazar
[dc.contributor.author]
Jin S.
Yayın Yılı
[dc.date.issued]
2018
Yayıncı
[dc.publisher]
MDPI AG
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Three-dimensional water vapor can be reconstructed from Global Navigation Satellite System (GNSS) observations, which can study 3-D profile variations of atmospheric water vapor and climate. However, there is a large uncertainty of water vapor tomography from single GPS system observations due to limited satellites. The rapid development of multi-GNSS, including China's Beidou Navigation Satellite System (BDS) and Russia's GLONASS, has greatly improved the geometric distribution of satellite ray-path signals, which may improve the performance of water vapor tomography by combining multi-GNSS. In this paper, 3-D water vapor tomography results are the first time obtained using multi-GNSS data from Continuously Operating Reference Stations (CORS) network in Wuhan, China, whose performances are validated by radiosonde and the latest ECMWF ERA5 reanalysis products. The results show that the integrated multi-GNSS can pronouncedly increase the number of effective signals, and 3-D water vapor results are better than those from the GPS-only system, improving by 5% with GPS + GLONASS or GPS + GLONASS + BDS, while BDS has results that are not improved too much. Therefore, multi-GNSS will enhance the reliability and accuracy of 3-D water vapor tomography, which has more potential applications in the future.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
ECMWF
Konu Başlıkları
[dc.subject]
MART
Konu Başlıkları
[dc.subject]
Multi-GNSS
Konu Başlıkları
[dc.subject]
Water vapor tomography
Haklar
[dc.rights]
info:eu-repo/semantics/openAccess
ISSN
[dc.identifier.issn]
2072-4292
Sponsor YAYINCI
[dc.description.sponsorship]
National Natural Science Foundation of China: 11573052 National Natural Science Foundation of China
Sponsor YAYINCI
[dc.description.sponsorship]
Acknowledgments: The authors would like to thank ECMWF for providing meteorological reanalysis data. This research is supported by the National Natural Science Foundation of China (NSFC) Project (grant no. 11573052).
Dergi Adı
[dc.relation.journal]
Remote Sensing
Dergi Sayısı
[dc.identifier.issue]
1
Dergi Cilt Bilgisi
[dc.identifier.volume]
10
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.3390/rs10010062
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/3857
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
102
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
07 Haziran 2024 04:50
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Tıklayınız
multi-GNSS tomography results GLONASS Navigation system Satellite System improved observations signals (CORS) integrated pronouncedly products reanalysis network latest validated performances radiosonde GPS-only increase future applications potential accuracy reliability enhance Therefore number improving Reference better effective
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