摘要
传统的极区横向地球坐标导航算法是在假设地球为标准圆球的前提条件下推导的,由于标准圆球模型与地球真实形状差别较大,导致该导航算法有原理性的误差。针对上述问题,提出了一种新的横向经纬度定义方式,并在此基础上推导了改进的极区横向地球坐标导航力学编排方案,该方案可以克服传统的极区横向地球导航算法中由于地球模型带来的原理性误差,极大地提高惯导系统在极区的导航精度。仿真分析表明,改进的横向经纬度导航算法可以满足载体在极区航行时的导航需要。
When the ordinary strapdown inertial navigation system works in the polar regions, the high latitudes will cause the overflow of navigation computer which is applied to calculate navigation parameters. To solve this prob- lem, an improved navigation algorithm based on transversal frame was proposed, which not only resolve the overflow of ordinary, navigation algorithm in the polar region, but also overcome the principal error generated by the supposed spherical model of earth in the ordinary navigation algorithm based on transversal frame. The simulation indicates that the modified navigation algorithm based on transversal frame can satisfy the requirements of sailing in the polar re- gions.
出处
《计算机仿真》
CSCD
北大核心
2015年第8期89-93,130,共6页
Computer Simulation
关键词
惯性导航
极区
横向经纬度
Strapdown inertial navigation system
Polar region
Transversal frame
