摘要
波束指向同步是主星带伴随分布式小卫星雷达系统必须解决的问题之一。主星为补偿多普勒频移而进行的姿态导引会导致地面目标点相对位置漂移,针对这一现象,伴随分布式小卫星应进行姿态控制与主星协同,为保证姿态控制器在外界扰动和参数不确定情况下有效工作,分别设计了自适应姿态机动控制律和姿态跟踪控制律。仿真结果表明,姿态控制器可以有效实现姿态机动和跟踪,控制精度能够满足波束指向同步的要求。
Beam synchronization is one of synchronization for spaceborne parasitic radar system.The DOPPlER shift is compensated by the chief satellite with attitude steering that will result in excursion of the target point＇s position on the ground.For beam pointing synchronization,the attitude control of deputy satellite should be coordinated.The attitude tracking adaptive law and attitude steering adaptive law are presented.The simulation shows that the attitude controller can steer and track the attitude with the parametric uncertainty and disturbance,the control precision meets the demand of beam synchronization.
出处
《航天控制》
CSCD
北大核心
2010年第5期45-50,共6页
Aerospace Control
关键词
姿态跟踪
波束同步
雷达
Attitude track
Beam synchronization
Radar
