摘要
对GPS/INS组合导航系统的紧耦合算法进行了理论推导。详细分析了当INS元器件性能变差时,GPS/INS组合导航系统在不同耦合模式下的定位精度变化规律,得出采用紧耦合模式的组合导航系统比一般的松耦合方式能获得更好的定位精度;并通过仿真验证了该结论的正确。
In this paper, the Algorithm of tight coupling of the integrated navigation system is studied; and the precision in different coupling mode for GPS/INS integrated navigation system is also analyzed by simulation when the performance of INS become degraded. It turns out that GPS/INS integrated navigation system based on tight coupling can get higher precision than that by GPS/INS integrated navigation system based on loose coupling. The conclusion is proven correct via simulation.
出处
《航空电子技术》
2007年第4期1-6,共6页
Avionics Technology
关键词
组合导航
卡尔曼滤波技术
紧耦合
松耦合
integrated system
Kalman filter
tight coupling
loose coupling
