摘要
针对MEMS技术的惯性传感器低精度的特点,提出一种高精度的组合导航算法,采用地磁辅助导航进行闭环校正,并对地磁的自差和航向角进行观测,以达到较高的惯性导航精度和更高的动态性能。实验证明,状态反馈的惯性导航系统能很好地克服惯导的误差累积,大幅度提高了地磁导航的抗干扰能力,得到较好的导航精度。
According to the characteristics of low precision of the inertial sensor of MEMS technology,a high precision of integrated navigation algorithm is put forward,adopt geomagnetic aided navigation with closed-loop correction,and the deviation of the magnetic and heading Angle of the observation is in order to achieve high precision of inertial navigation and a higher dynamic performance.Experiments show that state feedback of inertial navigation system can overcome the error accumulation of inertial navigation,greatly improve the anti-interference ability of the geomagnetic navigation,get better navigation accuracy.
出处
《长春理工大学学报（自然科学版）》
2015年第6期127-132,共6页
Journal of Changchun University of Science and Technology(Natural Science Edition)
关键词
地磁导航
MEMS技术
组合滤波
自差校正
geomagnetic navigation
MEMS technology
composite filtering
deviation correction
