为提高光学遥感卫星图像地面定位精度，提出了一种基于全光学路径的相机/星敏感器视轴指向监测方法。方法采用同一基准部件分别建立相机和星敏感器测量通道，基准部件采用激光二极管作为测量光源，经过会聚和准直进入相机/星敏感器光学系统并成像，当相机/星敏感器相对基准部件视轴发生变化时，成像光斑相应地也发生位置移动，进而可以获取相机视轴转动信息; 基于所提方法建立了光学模型，利用光线追迹法对相机夹角变化进行仿真与分析，并与理论分析结果进行对比。结果表明，方案可以满足高精度的相机视轴监测。

A full-optical route bore-sight monitor method was proposed for space camera and star sensor with the intention to improve the image position accuracy of the optical remote satellite. Both of the space camera and star sensor bore-sight monitor channels were built with the same base, which used laser diode as measuring source, the laser beam introduced into camera/ star sensor optical system and imaged on the focal plane after collecting and collimating process, then bore-sight rotate information was calculated by the spot translation on the focal plane when the bore-sight rotated relative to the base; A optical model is built, simulation with ray tracing method was analyzed and compared with theoretical analyze. The result showed that the method satisfied the camera/star sensor bore-sight monitor with high precision.