K频段测距系统星间高精度指向控制算法  

Algorithm of High Precision Inter-satellite Pointing Control for KBR System

作　　者：辛宁[1] 邱乐德[1] 周钠[1] 张立华[2] 

机构地区：[1]中国空间技术研究院通信卫星事业部,北京100094 [2]航天东方红卫星有限公司,北京100094

出　　处：《航天器工程》2016年第2期32-38,共7页Spacecraft Engineering

基　　金：国家高技术研究发展计划(863计划)(2012AA01A504);国家自然科学基金(91438205)

摘　　要：为了避免多路径噪声对低低星间跟踪(SST-LL)重力测量卫星K频段测距(KBR)系统测距精度的影响,基于SST-LL重力测量卫星的超静卫星平台,提出了一种磁控制与喷气控制相结合的KBR系统星间高精度指向控制算法。首先,利用喷气执行机构使卫星快速机动到目标姿态角;然后,利用磁力矩器和喷气执行机构对卫星进行联合稳定控制,在满足省电和节省喷气量的条件下,实现长周期、高精度的天线相对指向控制。利用"重力场反演与天气试验"(GRACE)卫星参数进行仿真验证,结果表明:在正常轨道运行模式下,该算法能实现俯仰和偏航方向优于1mrad的控制精度,可为KBR系统在轨高精度测距提供保证。In order to avoid the effect of multipath noise on ranging accuracy of SST-LL（satellite to satellite tracing low-low）gravity measurement satellite KBR（K band ranging）system,a high precision KBR system inter-satellite pointing control algorithm fusing magnetic control and thruster control is proposed based on ultra quiet satellite platform of SST-LL gravity measurement satellite.Firstly the thruster is applied to maneuver the satellite into the target angle attitude as fast as possible.Then the combination of magnetic torque and thruster torque is applied to realize the long-term and high precision pointing control under the circumstances of saving the finite electricity and fuel reserves.The simulation results by using GRACE satellite show that the attitude control precision of pitch and yaw angles can be better than 1mrad under the normal orbit moving mode,which can provide a guarantee for high accuracy ranging of KBR system.

关 键 词：低低星间跟踪重力测量卫星 超静卫星平台 K频段测距系统 星间指向控制 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]