基于大视场星敏感器惯性∕星光组合导航与仿真  

INS/CNS Integrated Navigation System Based on Wide FOV Star Sensors and Simulation

作　　者：崔航 邵会兵[1] 张康[1] CUI Hang;SHAO Hui-bing;ZHANG Kang(Beijing Institute of Control and Electronics Technology,Beijing 100038,China)

机构地区：[1]北京控制与电子技术研究所,北京100038

出　　处：《计算机仿真》2019年第1期29-33,56,共6页Computer Simulation

摘　　要：针对惯性器件误差随时间积累导致导航精度降低的问题,利用大视场星敏感器具有的测姿精度高且误差不累积的特点,研究惯性/星光组合系统在线标定方法。上述方法通过绕陀螺仪三个敏感轴方向的姿态激励实现对陀螺仪工具误差以及初始对准误差和星惯安装误差的在线标定,通过对惯性器件测量结果的修正,抑制导航误差。仿真结果表明,在线标定方法可以实现对上述误差参数的在线标定,显著提高了组合导航的定位精度,具有一定的工程实用价值。Since an inevitable accumulation error of navigation is inevitable due to the error parameter of inertial instruments,an online calibration method of INS/CNS Integrated Navigation System is proposed on account of the advantages of highly accurate attitude determination of the wide FOV star sensor and no accumulation of calculating error. The method is motivated by the angular velocity of the sensitive axis of gyroscope. This can achieve the aim to estimate the tool error of the gyro,initial alignment error and the installation error between the star sensor and the inertial instrument on – line. The navigation error was reduced when using the feedback calibration of the error parameters.The simulation results show that the online calibration method can accurately estimate the above error parameters and significantly improve the position accuracy,thus offering a high value of engineering practicability.

关 键 词：大视场星敏感器 组合导航 在线标定 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]