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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。
Aiming at the problem of laser communication between aircraft with attitude maneuver, a new method of high precision and rapid measurement of attitude angle is studied. This attitude angle measurement method uses a double-field star sensor composed of wide and narrow fields of view. Attitude angle measurement simulation is carried out with 0-track aircraft as an example. The wide field of view is used to identify the polar star The narrow field of view is used to track the Polaris. The three attitude angles of yaw, pitch and roll are obtained accurately by comparing the measured values of Polaris vectors with their theoretical values. The analysis shows that the angular resolution of the attitude angle is less than 1 ". The measurement process does not require time-consuming searching of the star database, and a frame of image can be used to perform a quick measurement.