在对影响星敏感器精度的误差源做出权重分析和比较的基础上，提出一种基于蒙特卡罗模拟的星敏感器精度误差分析方法，避免冗长和繁琐的理论推导，直观且系统地分析了星敏感器误差传播关系，建立星敏感器误差传播模型，为星敏感器的优化设计、标定补偿提供依据和准则，通过仿真验证误差传播模型及误差分析方法的准确性，为高精度星敏感器的设计制造提供重要基础和保证。

A synthetic error analysis approach is proposed in detail based on error source weight analysis and comparison of the star tracker using Monte Carlo method. It can avoid long and cumbersome theoretical derivation, which can provide error propagation relation of the star tracker intuitively and systematacially. The error propagation model can provide foundation and rule for optimization design, calibration and compensation of the star tracker. Simulation consequences prove that the systematic analysis is adequate and precise, which can provides important guarantee for design and manufacture of high accuracy star trackers.