CORDIC算法在捷联导航系统姿态解算中的应用

Application of CORDIC algorithm on the attitude algorithm for SINS

在传统CORDIC算法的基础之上,通过增加迭代次数,对迭代参数进行优化筛选,提高了运算精度,通过在Altera公司NiosⅡ处理器中增加自定义指令的方式完成了硬件实现.最终将其运用到了捷联导航捷联姿态解算算法中,使解算结构得到简化,速度得到提升.

This paper improves the calculation precision of traditional CORDIC algorithm by increasing the iteration numbers and optimizing the parameters related to iterations. The hardware implementation was achieved by adding self-defined instructions in the Nios Ⅱ processor of Ahera corporation. The proposed method simplifies the attitude algorithm for SINS and speeds up the computation.