微小卫星高分辨率相机CCD焦面组件热控制  

Thermal Control of the CCD Focal Plane of High Resolution Cameras for Microsatellite

作　　者：孔林 姜峰 王建超 柏添 KONG Lin;JIANG Feng;WANG Jianchao;BAI Tian(Chang Guang Satellite Technology CO.,LTD.,Changchun 130033,China)

机构地区：[1]长光卫星技术股份有限公司,长春130033

出　　处：《航天返回与遥感》2023年第3期62-68,共7页Spacecraft Recovery & Remote Sensing

基　　金：吉林省发展与改革委员会产业技术研究与开发项目(2021C45-1)。

摘　　要：为了保证微小卫星高分辨率遥感器相机的成像品质,需控制焦面组件的温度水平及温度稳定性,特别是焦面CCD光学探测器件的温度控制。首先提出以相变储能与超低刚度柔性导热索相结合的焦面组件精密热控方法,对相变储能装置与石墨柔性导热索的设计及参数选取进行详细介绍;然后,建立焦面组件的热仿真模型并进行温度计算;最后,在真空环境下进行了热试验。计算与试验结果表明,焦面CCD器件长期温度为15~18.5℃,工作温升速率为0.33℃/min,具有良好的温度水平与温度稳定性;热控补偿功率≤4.8 W,约为焦面组件发热功率的1/10,可节省卫星能源消耗,验证了焦面组件热控制方法的正确性。In order to ensure the imaging quality of high resolution remote sensing cameras for microsatellite,it is necessary to control the temperature level and temperature stability of the focal plane assembly,especially of the CCD device.Firstly,a precise thermal control method for the focal plane is proposed which combines the phase change energy storage device and low stiffness flexible thermal strap,and the design and parameter selection of the phase change energy storage device and graphite flexible thermal strap are introduced in detail.Then,the thermal simulation analysis model is established and the temperature is calculated.Finally,the thermal vacuum test is carried out and the results show that the long-term temperature of the focal plane CCD device is 15~18.5℃with the temperature rise rate 0.33℃/min,which has good temperature level and temperature stability;the electric heating power is less than 4.8 W,about 1/10 of the focal plane power,greatly saving satellite energy.The result shows that the thermal control method of the focal plane assembly is reasonable and feasible.

关 键 词：相变储能 柔性导热索 精密热控 电荷耦合器件 微小卫星 空间遥感相机 

分 类 号：TN386.5[电子电信—物理电子学]