弹载组合导航算法仿真实现

A Combined Onboard Navigation Algorithm for Munition Shell

本文阐述了基于高旋类弹载组合导航系统的功能和精度仿真,该仿真系统利用实弹惯性测量单元数据及卫星导航数据进行算法融合,从而实现空中动态初始对准及姿态位置解算功能。本算法中主要应用了EKF(扩展卡尔曼滤波)技术融合GPS数据和IMU(惯性测量单元)完成初始对准和航姿解算功能,经过算法仿真论证,本算法可以实现弹载体的航姿和位置解算功能,并且精度指标可以满足控制使用要求。

In this paper,a combined onboard navigation algorithm is proposed for high-speed rotating munition shell.The proposed algorithm mainly uses the extended Kalman filtering(EKF)technology to fuse real GPS data and inertial measurement unit(IMU)data,achieving dynamic initial alignment and flight attitude calculation.Simulation results show that the proposed algorithm can calculate the flight attitude and position of the munition shell with necessary accuracy for related control application.