航空制导炸弹SINS/GPS组合导航系统的设计

针对某型航空制导炸弹设计了SINS/GPS组合导航系统,考虑到制导航弹的高精度、低成本的特殊要求,系统采用了基于挠性陀螺的IMU作组合,而导航计算机采用基于“浮点DSP FPGA”的主从式多处理机模式,具有实时性好、运算精度高等优点,同时文章讨论了系统软件的详细设计,包括系统自检、初始对准、惯导解算、信息融合等模块的设计及部分核心算法的实现,最后对原理样机进行了地面跑车试验,试验结果表明系统的设计是成功的,利用该方案设计的原理样机能够满足实际要求。

The Design of SINS/GPS Integrated Navigation in Guidance Munitions

The paper gives the design of SINS/GPS integrated navigation system in guidance munitions.Considering the special demands of the guidance munitions which has high accuracy and low cost,the system is composed of IMU based on flexible gyroscope.The system uses PS(Principal and Subordinate) multiprocessor architecture based on floating point DSP combined with FPGA,which has advantages of better real-time performance and higher operating accuracy.Meanwhile the design of software system including the system self-check,initial alignment,INS calculation,information fusion and the realization of some core algorithms are also discussed in this paper.In the end,the excellent result of the run-in test indicates that the system design method is successful,and it can satisfy the demands of the engineering application.