Volume 37 Issue 5
Sep.  2017
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HOU Weijun, LI Yihong, XU Buyun, YANG Xiaoyun, LIU Daizhi. A Joint Method for Solving Combined DCB of Single Receiver GNSS Data ormalsize[J]. Journal of Space Science, 2017, 37(5): 601-607. doi: 10.11728/cjss2017.05.601
Citation: HOU Weijun, LI Yihong, XU Buyun, YANG Xiaoyun, LIU Daizhi. A Joint Method for Solving Combined DCB of Single Receiver GNSS Data ormalsize[J]. Journal of Space Science, 2017, 37(5): 601-607. doi: 10.11728/cjss2017.05.601
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A Joint Method for Solving Combined DCB of Single Receiver GNSS Data ormalsize

doi: 10.11728/cjss2017.05.601

  • Junior Command College, Rocket Force University of Engineering, Xi'an 710025

  • Received Date: 2016-06-21
  • Rev Recd Date: 2016-09-08
  • Publish Date: 2017-09-15
    Abstract
  • The largest error sources of deriving TEC from GNSS observational data are Combined Differential Code Biases (CDCB) of instruments, including both satellite's DCB and receiver's DCB. Current existing methods for solving these DCBs are pretty suitable for multi-receiver cases, but under single receiver cases, they are not ideal for sparse ionospheric puncture points and time-unaligned signals among satellites. A joint method based on the local model fitting method and SCORE method is proposed to improve the solution for the single receiver case. The joint method takes advantage of the higher accuracy of local model fitting method during ionosphere quiet period, meanwhile it overcomes the disadvantage of strong restraint of SCORE method. By using of GPS and BDS data received by GP Station-6 receiver, the practical calculation proves the effectiveness and accuracy of the joint method.

     

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