摘要
捷联惯性导航系统的误差随着时间累积而不断增大,最终会导致导航失效;文章根据捷联惯导系统的误差方程,分析了捷联惯导系统的主要误差源对系统的影响及误差特性,说明各误差对系统的精度影响较大;为减小这种误差对导航系统的影响,通过卡尔曼滤波将GPS与捷联惯导系统组合,用GPS的导航信息对捷联惯导系统的误差进行校正,并对其校正的性能进行了仿真,仿真结果说明该方法可以有效的校正捷联惯导系统的误差,提高系统的精度。
Strap--down Inertial Navigation System error over time and continues to increase, and eventually leads to navigation failure. In this article, according to the SINS error equations the impact of the major error sources for SINS and error characteristics are analyzed. The analysis results show that errors have a greater impact on the accuracy of the system. Ifi order to reduce this error impact on the system SINS error is corrected with GPS navigation information though the combination of GPS and SINS by Kalman Filter. The correction perform ance is studied by simulation. The simulation results show that the method can effectively correct the error of SINS and improve the preci sion.
出处
《计算机测量与控制》
北大核心
2013年第9期2518-2521,共4页
Computer Measurement &Control
基金
国家自然科学基金(61273049)
