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3CCDs在低温条件下工作时,暗电流增大,严重影响成像质量。为了保证3CCDs在航空设备上的成像质量,针对航空光电设备的工作环境特点,分析了航空光电设备的热传递方式,讨论了航空光电设备整体热控和3CCDs探测器局部热控方法的可行性,对热设计进行了建模与估算,根据估算结果,采取相应的措施。实验证明,在设计阶段对航空光电设备热设计充分地估计,其理论数据与实验数据较接近,采取相应的措施,能够满足实际应用的要求。
When 3CCDs work at low temperature, the dark current increases, which seriously affects the imaging quality. In order to ensure the imaging quality of 3CCDs on aeronautic equipment, aiming at the characteristics of working environment of aeronautical optoelectronic equipment, the heat transfer modes of aeronautical photovoltaic equipment are analyzed. The feasibility of local thermal control of aeronautical photovoltaic equipment and local thermal control of 3CCDs detector is discussed. The thermal design was modeled and estimated. Based on the estimation results, corresponding measures were taken. Experiments show that in the design phase of the thermal design of aero-optoelectronic devices fully estimated that the theoretical data and experimental data are closer to take appropriate measures to meet the practical application requirements.