globalchange  > 气候变化与战略
DOI: 10.3390/rs12040617
论文题名:
A new approach of the global navigation satellite system tomography for any size of GNSS network
作者: Wang Y.; Ding N.; Zhang Y.; Li L.; Yang X.; Zhao Q.
刊名: Remote Sensing
ISSN: 20724292
出版年: 2020
卷: 12, 期:4
语种: 英语
英文关键词: GNSS ; Meshing technique ; Tomographic technique ; Water vapor
Scopus关键词: Air navigation ; Communication satellites ; Tomography ; Water vapor ; Global Navigation Satellite Systems ; GNSS ; Ground based ; High flexibility ; Meshing techniques ; New approaches ; Radiosonde datas ; Tomographic techniques ; Global positioning system
英文摘要: Global Navigation Satellite System (GNSS) tomography is a popular method for measuring and modelling water vapor in the troposphere. Presently, most studies use a cuboid-shaped tomographic region in their modelling, which represents the modelling region for all measurement epochs. This region is defined by the distribution of the GNSS signals skywards from a network of ground based GNSS stations for all epochs of measurements. However, in reality at each epoch the shape of the GNSS tomographic region is more likely to be an inverted cone. Unfortunately, this fixed conic tomographic region does not properly reflect the fact that the GNSS signal changes quickly over time. Therefore a dynamic or adaptive tomographic region is better suited. In this study, a new approach that adjusts the GNSS tomographic model to adapt the size of the GNSS network is proposed, which referred to as The High Flexibility GNSS Tomography (HFGT). Test data from different numbers of the GNSS stations are used and the results from HFGT are compared against that of radiosonde data (RS) to assess the accuracy of the HFGT approach. The results showed that the new approach is feasible for different numbers of the GNSS stations when a sufficient and uniformed distribution of GNSS signals is used. This is a novel approach for GNSS tomography. © 2020 by the author.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159499
Appears in Collections:气候变化与战略

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作者单位: School of Geography, Geomatics and Planning, Jiangsu Normal University, Xuzhou, 221116, China; School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, China; Department of Geography, Earth System Science, Vrije Universiteit Brussel, Brussels, 1050, Belgium; College of Geomatics, Xi'an University of Science and Technology, Xi'an, 710054, China

Recommended Citation:
Wang Y.,Ding N.,Zhang Y.,et al. A new approach of the global navigation satellite system tomography for any size of GNSS network[J]. Remote Sensing,2020-01-01,12(4)
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