摘要
研究基于PI滤波估计加表加速度漂移的兼容机与加表组合导航算法,针对加表存在漂移不能长时间使用,而兼容机不能保证连续输出且速度测量精度相对较低的问题,提出仅利用兼容机位置作为观测量采用PI滤波估计加表漂移的方法,并与加表组合导航给出连续位置/速度信息。基于PI滤波的组合导航算法简单,且易于工程实现;仿真结果表明基于兼容机位置与加表组合导航算法能有效估计加表漂移,提高位置/速度估计误差;兼容机位置与加表组合导航算法已通过在轨考核验证。
The algorithm of the integrated navigation with accelerometers and compatible mainframe based on the accelerometer drift estimation by using PI filter is researched.Firstly,the inertial navigation arithmetic is proven for satellites based on the J2000 inertial reference frame and the accelerometer drift is estimated by using PI filter based on the position/velocity error of the inertial navigation and compatible mainframe.Then,the arithmetic of the integrated navigation with compatible mainframe and accelerometers based on compatible mainframe position/velocity and position respectively is provided.Lastly,the engineering application mode is analyzed and the arithmetic is validated by the simulation and the application in orbit.The arithmetic of the integrated navigation based on PI filter is applicable to engineering application.
作者
王献忠
张肖
张丽敏
施常勇
Wang Xianzhong;Zhang Xiao;Zhang Limin;Shi Changyong(Shanghai Aerospace Technology Academy,Shanghai 201109,China;Shanghai Aerospace Control Technology Institute,Shanghai 201109,China;Shanghai Key Laboratory of Aerospace Intelligent Control Technology,Shanghai 201109,China)
出处
《航天控制》
CSCD
北大核心
2018年第6期36-41,共6页
Aerospace Control
关键词
组合导航
PI滤波
加表
漂移估计
兼容机
Integrated navigation
PI filter
Accelerometer
Drift estimation
compatible mainframe