摘要
针对转动惯量未知的非合作目标的姿态角速度估计问题,将解算得到的非合作目标的惯性姿态作为测量信息,估计姿态角速度和姿态动力学参数(即转动惯量比).首先,应用非线性控制系统的几何理论对待估计的状态扩展系统进行能观性分析.然后,利用UKF设计相应的滤波估计算法.仿真结果表明,本文所设计的方法能够精确估计出非合作目标的姿态角速度与转动惯量比.
For the moment of inertia unknown non-cooperative target angular velocity estimation problem, the non-cooperative target angular velocity and the ratios of inertia are estimated with the non-cooperative target inertial attitude as measurement. Based on the geometric theory of nonlinear systems, the estimated system observability is analyzed. The unscented Kalman filter（UKF） is used to solve the estimation problem. The numerical simulation results show the non-cooperative target angular velocity and ratios of inertia were estimated accurately.
出处
《空间控制技术与应用》
2010年第1期24-30,共7页
Aerospace Control and Application
基金
国家863计划(2007AA704037)资助项目
关键词
非合作目标
角速度估计
转动惯量未知
能观性
UKF
non-cooperative target
angular velocity estimation
moment of inertia unknown
observability
UKF
