CAJ | 학술논문

大基高比测绘相机斜视利于进行地面高程测量，小基高比测绘相机近正视利于进行平面高精度定位，并有利于降低畸变和减小遮挡。双基高比测绘是结合了大小基高比测绘优点的新型测绘手段，但需要对大功率设备进行高效散热，同时需为大尺寸镜面提供高精度温度梯度，这对双基高比立体测绘相机热控系统设计提出较高要求。文中采用耦合散热面、在大尺寸镜面背部设计铝合金热罩减小温度梯度、布置多路控温回路、利用高性能热管增强导热相结合的方式，对双基高比相机的热控系统进行详细设计。通过对相机外热流的分析，确定了β=17°，焦面组件、电子学器件、控制器同时工作的高温工况；β=27°，相机待机的低温工况。结合相机内热源及接口信息，制定了详细的热控方案，通过仿真分析验证了热控方案的正确性，各温控指标达到设计要求。文中可为我国双基高比立体测绘相机的研制提供热控方面技术支持。
대기고비측회상궤사시리우진행지면고정측량，소기고비측회상궤근정시리우진행평면고정도정위，병유리우강저기변화감소차당。쌍기고비측회시결합료대소기고비측회우점적신형측회수단，단수요대대공솔설비진행고효산열，동시수위대척촌경면제공고정도온도제도，저대쌍기고비입체측회상궤열공계통설계제출교고요구。문중채용우합산열면、재대척촌경면배부설계려합금열조감소온도제도、포치다로공온회로、이용고성능열관증강도열상결합적방식，대쌍기고비상궤적열공계통진행상세설계。통과대상궤외열류적분석，학정료β=17°，초면조건、전자학기건、공제기동시공작적고온공황；β=27°，상궤대궤적저온공황。결합상궤내열원급접구신식，제정료상세적열공방안，통과방진분석험증료열공방안적정학성，각온공지표체도설계요구。문중가위아국쌍기고비입체측회상궤적연제제공열공방면기술지지。
Strabismus of wide baseline mapping camera is benefit for ground elevation measurements. Front view of small baseline mapping camera is benefit for location with high precision, reducing distortion and decreasing shelter. Double baseline is a novel mapping means, combining the advantages of wide baseline mapping and small baseline mapping. But it requires efficient cooling for high power equipment and high precision temperature gradient for large-scale mirror, which put forwards harsh requirements for thermal control system. In this paper, some measurements were adopted to design thermal control system for double baseline mapping camera, such as coupling the radiating surfaces, designing aluminum heat shield in the back of large-scale mirrors, disposing many thermal control loops, and using high-performance heat pipe enhanced thermal conductivity. Based on the analysis about camera′s external heat flux, two extreme working conditions were determined. Hot working condition isβ=17° ,and focal plane assembly, electronics devices and controllers were all working. Cold working condition is β=27° , and the camera was in standby model. Considering with the interior heat fluxs and interface conditions, detailed thermal control schemes were established, and simulation results revealed the correctness of the thermal control schemes, and the temperature of various components met the design requirements. Our work can offer some thermal technique supports to study about mapping camera with double baseline.