基于激光与望远光瞳结合的星间基线指向测量方法

为解决编队小卫星星间基线指向的测量问题,提出了一种以激光与望远光瞳相结合的星间指向测量方法。建立了以迪卡尔坐标系为基准的星间基线指向测量模型,通过分析待测小卫星相对于基准小卫星空间位置发生改变时,待测小卫星特征点在基准小卫星上投影的改变规律,采用在待测卫星上放置一组空间阵列角锥棱镜的测量方案。对运行于不同半径轨道上的两颗小卫星之间的基线测量进行了仿真,最后通过实验对本文提出的方法进行了验证。实验结果表明,本方法可以实现对星间基线指向的测量,其测量结果的扩展不确定度为7.4′(k=2)。

Intersatellite baseline direction measurement based on laser and telescopic pupil

In order to measure the baseline direction between small satellites,a measurement method is proposed using laser and telescopic pupil.The model for intersatellite baseline direction measurement is established based on Cartesian coordinates.Through analyzing the displacement of the target satellite projection to the reference satellite when the relative position between the two satellites changes,a measurement method where a retro-reflector array is placed on the target satellite is proposed.Then simulation is carried out with different orbit parameters.The measurement method proposed in this article is verified through experiments.And the results show that the method can implement the measurement of intersatellite baseline direction effectively.The expanded uncertainty is 7.4′(k=2).