一种卫星间跟瞄方向的控制策略与实现

进行自由空间的光通信或空间对抗，需要在卫星间实现精确的跟踪与瞄准。因为地面测控站的设置非常有限，指令与数据注入的范围受到很多限制，所以要求这种跟瞄在很多时候是无主控制状态下完成的。提出了一种利用在地面测控站的范围内向星上数管中心注入目标卫星、本体卫星的轨道参数，其它时间依靠自主导航飞行和GPS修正的方法，结合本体星的姿态测量、振动测量实现卫星瞄准指向的方位角与俯仰角的精确控制的方法，提高了在地面站无法注入指令与数据时卫星的捕获概率。通过仿真，将计算结果与卫星仿真工具软件STK的数据进行比较，结果一致。最后在嵌入式DSP平台上实现了这一策略。

A Strategy and Realization of Direction Control for Intersatellite Pointing & Tracking

It is often necessary to keep pointing and tracking accurately between two satellites for Laser Communication at free space or counterwork in space.For there is limitation of GBMCS(Ground-Based Measure & Control Station),the instructions and data can only be sent in limited range.So pointing & tracking should be implemented in unassisted control at most of the time.In this paper,based on a method of injecting the orbital parameters of object satellite and subject satellite into the microprocessor embedded on satellite in the range of GBMCS,depending on self-control navigation and GPS modification at the rest of the time,joining the pose measurement and vibration measurement of the subject satellite,a technical solution of realizing precise control of the Azimuth and Elevation respectively in the process of pointing and tracking is presented promisingly.Accordingly,the arrest possibility of satellites is increased when the instructions and data can barely injected through GBMCS.After simulation and comparing the calculation result with the data in STK(Satellite Tool Kit),it is found out the results are the same.This technical solution could be realized with the embedded DSP system on the satellite.