A Integrated Navigation System Design Based on Missile-Borne Multi-level Fault Tolerance
Lei Haora · Aerospace Control · 2013
In view of the problems that the precision of loose integrated navigation system declines and the system even can not work when IMU and GPS are in abnormal state in high dynamic situation,the various types of abnormalities that may occur are analyzed and the appropriate treatment strategies are given in detail. On the basis,a kind of missile-borne multi-level fault tolerance integrated navigation system( MFTINS) based on DSP/FPGA hardware platform is designed,which is applied to the integrated navigation of a new missile. At the same time,in order to solve the problem that the effect of conventional Kalman filter( CKF) is not satisfactory and even divergent,the adaptive Kalman filter( AKF) is proposed. The applicability and effectiveness of the design for integrated navigation system and AKF is proven through tests and analyses.