Acta Geodaetica et Cartographica Sinica ›› 2016, Vol. 45 ›› Issue (8): 929-934.doi: 10.11947/j.AGCS.2016.20160044

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An Accurate Method for the BDS Receiver DCB Estimation in a Regional Network

LI Xin1, GUO Jiming1, ZHOU Lü1,2, QIN Fachao1,3   

  1. 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    2. Guangxi Key Laboratory for Spatial Information and Geomatics, Guilin University of Technology, Guilin 5410043, China;
    3. Land and Resources College, China West Normal University, Nanchong 637000, China
  • Received:2016-01-28 Revised:2016-04-25 Online:2016-08-20 Published:2016-08-31
  • Supported by:
    The National Nature Science Foundation of China (No. 41474004);The Open Foundation of Key Laboratory of Precise Engineering and Industry Surveying of National Administration of Surveying; Mapping and Geoinformation (No.PF2013-10);Guangxi Space Information and Mapping Key Laboratory of Funding Issues (No. 15-140-07-32)

Abstract: An accurate approach for receiver differential code biases (DCB) estimation is proposed with the BDS data obtained from a regional tracking network. In contrast to the conventional methods for BDS receiver DCB estimation, the proposed method does not require a complicated ionosphere model, as long as one reference station receiver DCB is known. The main idea for this method is that the ionosphere delay is highly dependent on the geometric ranges between the BDS satellite and the receiver normally. Therefore, the non-reference station receivers DCBs in this regional area can be estimated using single difference (SD) with reference stations. The numerical results show that the RMS of these estimated BDS receivers DCBs errors over 30 days are about 0.3 ns. Additionally, after deduction of these estimated receivers DCBs and knowing satellites DCBs, the extractive diurnal VTEC showed a good agreement with the diurnal VTEC gained from the GIM interpolation, indicating the reliability of the estimated receivers DCBs.

Key words: BDS, receiver DCB, regional area, SD, VTEC

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