姿态敏感器用来测量星体相对于某一基准方位的姿态信息，利用这些信息，可以确定星体的某一轴或三轴的姿态。星敏感器作为常用姿态敏感器，是以某一亮度高于+2可见星等的恒星为基准，测量其相对于航天器的角位置，并同星历表中的角位置参数进行比较，进而确定航天器的空间位置姿态。(The attitude sensor is used to measure the attitude information of a star relative to a certain datum direction. By using these information, the attitude of a certain axis or three axis of a star can be determined. Star sensor, as a common attitude sensor, is based on a star with a luminance higher than the +2 visible star, measuring its angular position relative to the spacecraft, and comparing the angular position parameters in the ephemeris to determine the space position attitude of the spacecraft.)