测绘通报 ›› 2017, Vol. 0 ›› Issue (9): 1-5.doi: 10.13474/j.cnki.11-2246.2017.0275

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Research on Beidou GBAS Integrity Enhancement Technology Based on Pseudo Satellite

YU Geng1, ZHANG Binhao2, LU Shaoyong3, ZHAO Long1, REN Wujun2   

  1. 1. College of Civil Aviation, Shenyang Aerospace University, Shenyang 110136, China;
    2. College of Electronic and Information Engineering, Shenyang Aerospace University, Shenyang 110136, China;
    3. Northwest Civil Aviation Air Traffic Management Bureau, Xi'an 712035, China
  • Received:2017-01-18 Online:2017-09-25 Published:2017-10-12

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Abstract: According to the requirements of precision navigation technology (RNP), the International Civil Aviation Organization (ICAO) proposed the GBAS, which will become the inevitable trend of future development.But in the complex environment of the airport, the satellite signal is susceptible to outside influence and interference, lack of continuity, thereby affecting the implementation of GBAS system integrity performance.Therefore, the method of combining pseudo satellite and BeiDou satellite to enhance GBAS is proposed.The simulation results are compared with the precision factor (DOP), multiple reference consistency detection (MRCC) and integrity of the pseudo satellite.The simulation results show that the precision of the system is improved obviously after the increase of the pseudo satellite (PDOP less than 3),at the same time the new method improves the integrity of the performance,and can provide CAT Ⅱ class and above grade precision access services of GBAS in the airport of sophisticated environment.

Key words: pseudo satellite, GBAS, DOP, MRCC, integrity

CLC Number: