Ultra-tight GPS/IMU Integration based Long-Range Rocket Projectile Navigation

作者：Zhao, Handong^*; Li, Zhipeng

来源：Defence Science Journal, 2016, 66(1): 64-70.

DOI：10.14429/dsj.66.8326

• Long-range rocket projectile
• global position system
• inertial measuring unit
• ultra-tight integration
• celestial navigation system
• geomagnetism navigation system

Accurate navigation is important for long-range rocket projectile's precise striking. For getting a stable and high-performance navigation result, a ultra-tight global position system (GPS), inertial measuring unit integration (IMU)-based navigation approach is proposed. In this study, high-accuracy position information output from IMU in a short time to assist the carrier phase tracking in the GPS receiver, and then fused the output information of IMU and GPS based on federated filter. Meanwhile, introduced the cubature kalman filter as the local filter to replace the unscented kalman filter, and improved it with strong tracking principle, then, improved the federated filter with vector sharing theory. Lastly simulation was carried out based on the real ballistic data, from the estimation error statistic figure. The navigation accuracy of the proposed method is higher than traditional method.

• 出版日期2016-1
• 单位中北大学