Volume 30 Issue 2
Apr.  2021
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WANG Shan, WANG Ding, GUAN Yingxuan. An Improved Ionospheric Delay Correction Method for SBAS[J]. Chinese Journal of Electronics, 2021, 30(2): 384-389. doi: 10.1049/cje.2021.02.006
Citation: WANG Shan, WANG Ding, GUAN Yingxuan. An Improved Ionospheric Delay Correction Method for SBAS[J]. Chinese Journal of Electronics, 2021, 30(2): 384-389. doi: 10.1049/cje.2021.02.006

An Improved Ionospheric Delay Correction Method for SBAS

doi: 10.1049/cje.2021.02.006
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  • Author Bio:

    WANG Ding   was born in Hebei Province. He received the M.S. degree in electrical and computer engineering from the University of Arizona. He is currently pursuing the Ph.D. degree with China University of Mining and Technology-Beijing. His research interests include satellite navigation and augmentation technology of SBAS

    GUAN Yingxuan   was born in Liaoning Province. She is now an undergraduate of China University of Mining and Technology-Beijing. Her research interests include satellite navigation and satellite observation data processing

  • Corresponding author: WANG Shan   (corresponding author) was born in Hebei Province. She received the Ph.D. degree in communications and information systems from Beihang University. She is now a lecturer of China University of Min-ing and TechnologyBeijing. Her research interests include satellite navigation and augmentation technology. (Email: wangshan241@163.com)
  • Received Date: 2020-11-23
  • Accepted Date: 2020-12-18
  • Publish Date: 2021-03-01
  • The existing ionospheric delay correction methods in Satellite based augmentation system (SBAS) were just for single constellation and over conservative. In this paper, we propose a new method to make more accurate ionospheric delay correction and tighter error bound orienting towards GPS and GLONASS. Considering that some Ionospheric pierce points (IPPs) are almost motionless, we make a filtering process to estimate the ionospheric delays at Ionospheric grid points (IGPs) to better reflect the ionospheric temporal variation. Then we conduct a simulation on ionospheric delay estimation at IGPs in dual constellations through planar fit method and filtering method. It can be concluded that the filtering method can bound the ionospheric delay correction error more tightly, simultaneously the ionospheric delay correction accuracy is improved a bit.
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