根据摄像机所处空间环境和结构特点，设计它的热控系统，同时进行了热平衡试验来验证热设计的合理性。首先，总结了摄像机热设计的准则，分析了摄像机所处的空间热环境。然后，对摄像机的各个部分进行了热设计；采用被动热控措施进行热隔离和热疏导，充分利用了摄像机所搭载的卫星平台的热容；采用主动热控措施将温度控制在热控指标范围之内。最后，根据摄像机的热环境和各种工作模式设计了4种极端试验工况，并进行了热平衡试验。试验结果表明，摄像机在存储工况时，其温度与安装面温度相差3℃左右，满足存储温度指标要求；低温工况和高温工况时，其整机温度为-3.1℃和45.7℃，镜头温度为-4.5℃和46.8℃，均满足热控指标要求。试验结果证实设计的空间摄像机热控系统合理可行。

A thermal control system for space cameras was designed according to its space environments and structure characteristics. Firstly, the thermal design guidelines of space cameras were summarized, and the thermal environment of a space camera was analyzed. Then, the thermal design of the space camera was carried out. By utilizing the thermal capacitance of a satellite, the passive thermal control was used for thermal isolation and thermal transmission and the active thermal control was conducted to implement the temperature compensation. Finally, four extreme test conditions were designed and thermal balance tests were undertaken according to various work patterns and different thermal environments. The test results show that the temperature difference is 3 ℃ between the space camera and the fitting surface, which meets the system requirements for storage work conditions. Furthermore, the whole space camera temperatures are -3.1 ℃ and 45.7 ℃, the lens temperatures are -4.5 ℃ and 46.8 ℃ in the low temperature and high temperature work conditions, respectively, and they meet the thermal control system requirements. In conclusions, the thermal design of the space camera is feasible and reasonable.