星敏感器光轴热稳定性仿真分析方法

热稳定性用来衡量星敏感器光轴指向抵抗温度变化影响的能力，常用试验及仿真的方法进行分析验证.仿真方法因其高效率、低成本、可贯穿产品设计全周期等优点，已成为热稳定性分析验证的重要手段.开发了一种热 力 光联合仿真分析的方法进行星敏感器热稳定性计算.该方法集合了热分析、变形分析、成像仿真及热漂移计算等多项仿真分析过程.以某高精度星敏感器为例，进行了热稳定性计算，结果表明了该仿真方法的有效性.

A Thermal Stability Analysis and Simulation Method for Boresight Axis of Star Sensor

Boresight axis thermal stability indicates the star sensor’s capability to anti thermal change. Ground experiment and numerical simulation are the main approaches to analyze and verify this key performance. The simulation method is the primary one that can be used during the whole design period. An integrated method named thermal structural optical analysis approach is developed to analyze the thermal stability of star sensor. This approach includes thermal, structural, optical analysis and thermal drift calculation. A high accuracy star sensor’s thermal stability is analyzed as an example. The results show the efficiency of this integrated method.