GNSS World of China

Volume 48 Issue 2
Apr.  2023
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SONG Debiao, SUN Fuping, XIAO Kai, KE Ye, SHANG Xiangyong, YU Yuan. Performance analysis of BDS-3 PPP/INS tightly-coupled positioning[J]. GNSS World of China, 2023, 48(2): 30-35. doi: 10.12265/j.gnss.2022196
Citation: SONG Debiao, SUN Fuping, XIAO Kai, KE Ye, SHANG Xiangyong, YU Yuan. Performance analysis of BDS-3 PPP/INS tightly-coupled positioning[J]. GNSS World of China, 2023, 48(2): 30-35. doi: 10.12265/j.gnss.2022196
shu

Performance analysis of BDS-3 PPP/INS tightly-coupled positioning

doi: 10.12265/j.gnss.2022196
  • 1.

    Institute of Geospatial Information, Information Engineering University, Zhengzhou 450001, China

  • 2.

    Troops 31618, Fuzhou 350000, China

  • 3.

    Key Laboratory of Electro-Optical Countermeasures Test & Evaluation Technology, Luoyang Henan 471000, China

  • 4.

    Troops 32021, Beijing 100000, China

  • Received Date: 2022-10-27
    Available Online: 2023-05-04
    Abstract
  • With the completion of BDS-3 in China, the requirements of high-precision positioning and attitude determination based on BDS-3 is increasingly urgent. This paper derives the BDS-3 precise point positioning(PPP)model with ionosphere-free combination and inertial navigation system(INS)error equation in geocentric fixed coordinate system , and constructs the BDS-3 PPP/INS tight combination filtering model. This paper evaluates the positioning performance of BDS-3 PPP, BDS-3 PPP/INS loose combination model and BDS-3 PPP/INS tight combination model. The results of the experiment show that the position accuracy of BDS-3 PPP/INS loose combination is basically the same as that of BDS-3 PPP, the position accuracy of BDS-3 PPP/INS tight combination model in the east, north and sky directions is 7.9 cm, 9.3 cm and 9.4 cm, which is higher than that of BDS-3 PPP/INS loose combination model by 38.3%, 33.1% and 35.6%; the speed is improved by 27.3%, 45.8% and 12% respectively in three directions; the attitude accuracy of both is equal.

     

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