一种采用双视场星敏感器的飞行器姿态角快速、高精度测量方法

针对姿态经常机动的飞行器之间建立激光通信问题,研究了一种针对这种飞行器的姿态角高精度、快速测量新方法.这种姿态角测量方法采用一种由宽、窄两种视场组成的双视场星敏感器,并以0轨道飞行器应用为例进行了姿态角测量仿真:其中的宽视场用于识别北极星,窄视场用于跟踪北极星;通过对北极星方向矢量测量值与其理论值进行比较精确求出了偏航、俯仰和滚动三个姿态角.分析表明,姿态角的角分辨率小于1″;测量过程不需要耗时的星图数据库搜索,一帧图像就可以完成一次快速测量.

A Fast and Accurate Method for Spacecraft Attitude Determination Based on a Dual-Field Star Sensor

To determine attitudes of spacecrafts with laser communications under the condition of their frequently attitude maneuvering,a new method to measure the spacecraft attitude accurately and swiftly based on a dual-field star sensor is put forward and applied to a zero orbit spacecraft.The star sensor has an optical system with a wide and a narrow field of view and two sets of CCDs.The wide field sensor is used to detect the seven stars near the North Pole and to recognize the North Star.The narrow field senso...