Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (11): 3624-3631.doi: 10.12305/j.issn.1001-506X.2023.11.30

• Guidance, Navigation and Control • Previous Articles     Next Articles

State transformation Kalman filter for DVL/SINS integral navigation system

Kaidi JIN1, Hongzhou CHAI1,*, Chuhan SU2, Minzhi XIANG1, Ming LI1   

  1. 1. Institute of Geospatial Information, Strategic Support Force Information Engineering University, Zhengzhou 450001, China
    2. PIESAT Institute of Applied Beidou Navigation Technologies at Zhengzhou, Zhengzhou 450001, China
  • Received:2022-05-26 Online:2023-10-25 Published:2023-10-31
  • Contact: Hongzhou CHAI

Abstract:

The frame-inconsistent problem exists in conventional error equation of strapdown inertial navigation system (SINS). In this study, a more rigorous error equation of SINS attitude, velocity and position is derived by projecting the velocity error in the real navigation frame. Based on the newly defined velocity error, a modified Kalman filter model, including state model and measurement model, is constructed for Doppler velocity logger (DVL) /SINS integrated navigation. Compared with conventional Kalman model for DVL/SINS, simulations and field experiments indicate that the proposed algorithm is efficient in solving the frame-inconsistent problem in conventional DVL/SINS system, which can improve the navigation accuracy for the integrated navigation system.

Key words: strapdown inertial navigation system (SINS), Doppler velocity logger (DVL), integral navigation, error equation, Kalman filter

CLC Number: 

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