Acta Geodaetica et Cartographica Sinica ›› 2018, Vol. 47 ›› Issue (S0): 38-44.doi: 10.11947/j.AGCS.2018.20180314

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Detection and Repair of the Non-significant Cycle Slip in BDS Triple-frequencies GIF Combination

ZHANG Chenxi1,2, DANG Yamin2, XUE Shuqiang2, ZHANG Longping3   

  1. 1. Shandong University of Science and Technology, Qingdao 266510, China;
    2. Chinese Academy of Surveying & Mapping, Beijing 100083, China;
    3. Beijing Piesat Information Technology Company, Beijing 100195, China
  • Received:2018-06-29 Revised:2018-08-17 Online:2018-12-31 Published:2019-05-18
  • Supported by:
    The National Natural Science Foundation of China (No. 41674014)

Abstract: The accuracy of BDS triple-frequency cycle slip detection and repair is influenced by the observation environment. Three linear independence geometry-free and ionosphere-free combinations (GIF) have been widely applied detect and then to repair the GNSS cycle-slip, but for some special cycle-slip combinations or when observations with bad observation environment, the cycle-slip repair may be invalidated. For this, we further introduce the STPIR combination to the GIF model to detect and repair the cycle-slip, and use the second-order time-difference of the STPIR to further reduce the influence of the observational noise. The proposed method was applied to detect cycle slips in BDS observations during a magnetic storm. It shows that the proposed method can be used to detect and repair all possible cycle-slip combinations of BDS un-differenced observations.

Key words: BDS, cycle slip detection, triple frequency GIF combination, insensitive cycle slip

CLC Number: