【摘要】 在基于失准角观测量的自由段航天器惯性/星光组合定位中,由于系统状态方程的特性,使得位置速度输出不理想。针对这一问题,对量测信息进行了扩展,重建系统量测方程,然后进行以位置-角度为观测信息的最优滤波。仿真结果表明,该方法能够较大程度地提高自由段组合定位系统对于位置、速度的修正效果。更多还原

【Abstract】 Because of the characteristics of the system state equation of spacecraft in it’s free phase,the output of position and velocity are not good via INS/CNS integrated positioning.Aimed at this problem,we expland the measured informations and rebuild the equation of measurement.And then optimal fileter is established upon the position-angle informations.Simulation results indicated that the method in this paper can improve the effects of itegrated system to some extent.更多还原