ANALYSIS OF GRAVITY DISTURBANCE INFLUENCE ONSTRAPDOWN INERTIAL NAVIGATION SYSTEM
Yao Yingting 1) ;Shen Xiaorong 1,2) ;Zou Yao 1) ;and Ji Haiyan 3)
1)School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191;2)Laboratory of Intelligent Traffic System and Control Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191;3)Qingdao Navy Submarine Academy,Qingdao 266071
Abstract：Through the calculation of the gravity disturbance with the EGM2008 spherical harmonic model the gravity disturbance graph of a certain area wasgenerated .Since the model of strapdown inertial navigation error under the condition of gravity disturbance was established, then the influence of the horizontal component of gravity disturbance on the error of strapdown inertial navigation system can be proved by a simulation.The simulation results show that gravity disturbance can cause the velocity and the position error with the Schuler period oscilation, when there is 12.5×10 -5 ms -2 gravity disturbance, it will cause position error of 160 m.
Yao Yingting ,Shen Xiaorong,Zou Yao et al. ANALYSIS OF GRAVITY DISTURBANCE INFLUENCE ONSTRAPDOWN INERTIAL NAVIGATION SYSTEM[J]. jgg, 2011, 31(6): 159-163.
