第18卷
第6期
2010年6月
文章编号
1004-924X(2010)06-1367-07
光学精密工程
Optics and Precision Engineering
三线阵立体测绘相机热控系统的设计
帆，黄涛1.2
黎明1.2，吴清文1，江
（1.中国科学院长春光学精密机械与物理研究所，吉林长春130033
2.中国科学院研究生院，北京100039)
Vol.18
No. 6 Jun.2010
摘要：为了保证测绘相机的正常工作和测绘精度，针对测绘相机的特点设计了热控系统，并对该系统进行了热平衡试验验证。首先，对测绘相机所处的热环境进行了分析，对测绘相机窗口的外热流进行了计算。然后，对测绘相机的各个部分进行了热设计；采用被动热控错施控制相机的温度水平，降低测绘相机系统对外部热环境变化的灵敏度采取主动热控措施进行温差补偿，减小相机的轴向和对径温差。
，最后，根据测绘相机的热环境和各种工作模式设计了3种极端试验
工况，进行了热平衡试验。试验结果表明，在热控系统工作的情况下，测绘相机系统在各种工况下温度波动在（18士2）C之内，且轴向温差<4℃，径向温差<0.5C，测绘基座的温度在（18士3）℃之内，得到的结果能够满足测绘相机系统的需求。
关键词：三线阵业体测绘相机；温度均匀性；热稳定性：热试验
中图分类号：V475.2;V416.51
文献标识码：A
doi;10.3788/OPE,20101806.1367
Design of thermal control system for three-linear array mapping cameras
LI Mingl-, WU Qing-wen',JIANG Fan',HUANG Taol.?(1,Changchun Instituteof Optics,FineMechanics and Physics, Chinese Academy of Sciences,Changchun 130033,China;
2.Graduate University of Chinese Academy of Sciences,Beijing 100039,China)
Abstract: In order to guarantee the normal work and mapping accuracy of mapping cameras, a thermal control system for the mapping cameras was designed and tested by the thermal balance tests, Firstly, the thermal environment of a mapping camera was analyzed,and the external thermal flux of the pupil-in the mapping camera was calculated. Then, the thermal design of the mapping camera was carried out. A passive thermal control system was used to control the temperature of the camera to reduce the sensitivity of mapping camera to the external thermal environment. An active thermal control system was taken to carry out the temperature compensation to reduce the axial and radial temperatures of the mapping camera. Finally,three extreme test conditions were designed and thermal balance tests were undertaken according to various job models and different thermal environments. The test results show that when the thermal design system is working,the temperature fluctuations of the mapping camera are at (18±2) 'C,the axial and radial temperature differences are less than 4 C and 0. 5 C, respec-
收稿日期：2009-04-02；修订日期：2009-04-30.
基金项目：国家863高技术发展计划预研基金资助项目（No.2008AA121103-5）