Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (1): 210-220.doi: 10.12305/j.issn.1001-506X.2023.01.25

• Guidance, Navigation and Control • Previous Articles    

High precision approach-and-landing navigation technology based on SINS/GBAS integrated navigation

Lichun GAO1,2,*, Mingyang GAO1, Xiaofang CHEN2, Jianbing RAO1, Zesong FEI3, Shaojie NI4   

  1. 1. Space Engineering Development, China Aerospace Science and Industry Corporation Limited, Beijing 100854, China
    2. School of Management, Wuhan University of Technology, Wuhan 430070, China
    3. School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
    4. College of Electronic Science and Technology, National University of Defense Technology, Changsha 410003, China
  • Received:2020-11-23 Online:2023-01-01 Published:2023-01-03
  • Contact: Lichun GAO

Abstract:

Reusable launch vehicles have high accuracy requirements for position deviation during the approach-and-landing phase. However, the existed combined navigation methods have a large fluctuation of the navigation error, which cannot meet the navigation requirements of the launch vehicle in the landing approach section. In this paper, we establish a combined navigation method based on the precise position information output form the ground based augmentation system (GBAS) and the nonlinear error propagation model of the combined navigation strap-down inertial navigation system (SINS). We provide a composite correction structure of "output+feedback" for the launch vehicle navigation based on SINS/GBAS combined navigation. By introducing ionospheric and tropospheric errors into GBAS, the precise positioning of the vehicle positioning errors at the centimeter scale is achieved and the inertial guidance error drift problem is effectively suppressed by the extended Kalman filter algorithm. The simulation results show that the horizontal and elevation positioning error of the combined SINS/GBAS navigation is no more than 0.05 m; the velocity error is no more than 0.05 m/s. We verify the feasibility of the combined SINS/GBAS approach for the vehicle approach-and-landing navigation system.

Key words: integrated navigation, satellite navigation, ground based augmentation system, approach-and-landing

CLC Number: 

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