Title :
Observability analysis of four-position alignment for laser gyroscope strap-down inertial navigation system
Author :
Cao, Jingyu ; Tang, Jianxun ; Wang, Yu ; Wei, Guo
Author_Institution :
Coll. of Opto-Electr. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
In this paper, A laser gyroscope strap-down inertial navigation system (SDINS) error model with 12 system state parameters is derived, and the observability of SDINS is discussed by observability analysis of piece-wise constant system (PWCS) and observable degree analysis method based on the singular value decomposition (SVD). It is demonstrated that four-position alignment can make the system completely observable, and all the system state parameters can be estimated by Kalman filter. The simulation indicates the efficiency of the analysis results.
Keywords :
Kalman filters; error analysis; gyroscopes; navigation; piecewise constant techniques; remote sensing by laser beam; singular value decomposition; Kalman filter; SVD; error model; four-position alignment; laser gyroscope strap-down inertial navigation system; piece-wise constant system; singular value decomposition; Navigation; Kalman filter; PWCS; SDINS; SVD; four-position alignment; observability;
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
DOI :
10.1109/ICEOE.2011.6013345
