Open AccessAn attitude determination method based on convected Euler angle error model for SINS/CNS integrated system
Author(s) -
Jianli Li,
Yun Wang,
Pengfei Dang,
Zixing Lu
Publication year - 2018
Publication title -
satellite oceanography and meteorology
Language(s) - English
Resource type - Journals
eISSN - 2424-9505
pISSN - 2424-8959
DOI - 10.18063/som.v3i2.694
Subject(s) - euler angles , kalman filter , control theory (sociology) , euler's formula , pitch angle , transformation (genetics) , euler equations , computer science , mathematics , physics , mathematical analysis , artificial intelligence , geometry , biochemistry , chemistry , control (management) , geophysics , gene
The attitude determination method plays an important role in SINS/CNS integrated system for spacecraft. Since the misalignment angels are indirect measurements, the misalignment angle model used in the existing attitude determination method can cause transformation errors. To solve the problem, an attitude determination method based on convected Euler angle error model for SINS/CNS integrated system is proposed. The attitude error propagation is analyzed, and the convected Euler angle error model is derived. Furthermore, the state equation of SINS/CNS integrated system is established. The Kalman filter estimates and compensates the Euler angle errors. Finally, simulation results verified that the proposed method can improve the attitude accuracy compared to the conventional misalignment angle method.