ABSTRACT

In this paper, a novel sun sensor which has been applied on orbit since 2018 is introduced. The remote data transmitted from the satellite is analyzed to show its performance. In the lighting area, the sun sensor can give the sun vector which used for the attitude determination. From the data, the center point error is found to be the most significant factor that affects the accuracy of the sun sensor. In the “Sun pointing” work mode, the real output of the sun sensor is different from the theoretical output. The data from the star sensor is used for compensating the center point error based on ellipse fitting. The triad algorithm is affected by the center point error of the sun sensor. The simulation only considers this kind of error. And the result shows that it can decrease the Euler angle errors, so that improves the accuracy of triad algorithm.

摘要

在本文中，介绍了一种自 2018 年以来已在轨道上应用的新型太阳传感器。分析从卫星传输的远程数据以显示其性能。在光照区域，太阳传感器可以给出用于姿态确定的太阳矢量。从数据中发现中心点误差是影响太阳传感器精度的最重要因素。在“太阳指向”工作模式下，太阳传感器的实际输出与理论输出不同。来自星敏感器的数据用于基于椭圆拟合补偿中心点误差。三元组算法受太阳传感器中心点误差的影响。模拟只考虑这种误差。结果表明，它可以减少欧拉角误差，