“高分四号”卫星相机在轨温度分析及热设计优化

于峰; 徐娜娜; 赵振明

doi:10.13700/j.bh.1001-5965.2020.0053

“高分四号”卫星相机在轨温度分析及热设计优化

doi: 10.13700/j.bh.1001-5965.2020.0053

于峰^{1, 2, ,},
徐娜娜^{1, 2},
赵振明^{1, 2}

1.
北京空间机电研究所, 北京 100094
2.
先进光学遥感技术北京市重点实验室, 北京 100094

详细信息

作者简介:
于峰男, 硕士, 高级工程师。主要研究方向:航天遥感器系统热设计

通讯作者:
于峰, E-mail: njlgyufeng@163.com

中图分类号: V423.4
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- 文章访问数: 968
- HTML全文浏览量: 134
- PDF下载量: 268
- 被引次数: 0
出版历程
- 收稿日期: 2020-02-25
- 录用日期: 2020-06-06
- 网络出版日期: 2021-01-20

On-orbit temperature analysis and thermal design optimization for camera on GF-4 satellite

YU Feng^{1, 2
, ,},
XU Nana^{1, 2},
ZHAO Zhenming^{1, 2}

1.
Beijing Institute of Space Mechanics and Electricity, Beijing 100094, China
2.
Key Laboratory for Advanced Optical Remote Sensing Technology of Beijing, Beijing 100094, China

摘要

摘要:
随着空间相机分辨率日益提升，对光机主体等核心部组件的温度稳定性和均匀性要求也越来越高，地球静止轨道（GEO）空间外热流复杂且恶劣，实现相机高精度热设计挑战极大。针对"高分四号"卫星相机热设计的难点和特点，基于结构热控一体化的设计理念，采取了入光口热流屏蔽、间接辐射控温、散热面耦合等热控技术，实现了相机高精度控温；分析了相机入轨4年的温度数据及符合情况，验证了相机热设计的正确性，并根据在轨运行情况提出了热设计优化建议，为进一步提升地球静止轨道相机控温精度、降低热控资源提供支撑。
- 地球静止轨道(GEO) /
- 空间相机 /
- 在轨温度 /
- 热设计优化 /
- “高分四号”卫星
Abstract:
With the increase of space camera resolution, the requirements for temperature stability and uniformity of the optical system and the main load-carrying construction become higher and higher. It is a big challenge for the high-precision thermal control design of the Geostationary Orbit (GEO) camera due to the complicated space environment. According to the difficulties and characteristics of the GF-4 satellite camera's thermal control design, based on the design concept of integration thermal control design, thermal control technologies such as heat flow shield at the optical entrance, indirect radiation thermal control and coupled heat radiating surfaces are adopted to achieve high-precision temperature control; the temperature data of the camera in orbit for four years and the corresponding conditions are analyzed, the correctness of the camera's thermal control design is verified, and optimization suggestions are proposed based on the operation conditions in orbit. The thermal design methods also provide support for further improving the temperature control accuracy and reducing the thermal control resources of the geostationary orbit cameras.
- Geostationary Orbit (GEO) /
- space camera /
- on-orbit temperature /
- thermal design optimization /
- GF-4 satellite

HTML全文

图 1 相机主光学系统示意图

Figure 1. Schematic diagram of main optical system of camera

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图 2 电子设备散热设计示意图

Figure 2. Schematic diagram of heat dissipation design of electronic equipment

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图 3 主承力结构在轨温度数据

Figure 3. On-orbit temperature data of main bearing structure

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图 4 主镜在轨温度数据

Figure 4. On-orbit temperature data of main mirror

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图 5 制冷机热端在轨温度数据

Figure 5. On-orbit temperature data of refrigerator's hot end

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图 6 CMOS在轨温度数据

Figure 6. On-orbit temperature data of CMOS

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图 7 相机热分析模型

Figure 7. Thermal analysis model of camera

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图 8 相机遮光罩温度变化情况对比

Figure 8. Temperature change comparison of camera's hood

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图 9 相机主镜温度变化情况对比

Figure 9. Temperature change comparison of camera's main mirror

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图 10 不同热阻下相机主镜温度变化对比

Figure 10. Temperature change comparison of camera's main mirror under different thermal resistance

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图 11 优化方案5电子设备散热示意图

Figure 11. Heat dissipation diagram of electronic equipment in optimization design 5

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表 1 相机各关键部组件温度数据

Table 1. Temperature data of key components of camera

部组件	转移轨道温度/℃	2016年春分温度/℃	2019年8.8°温度/℃	2019年夏至温度/℃
主镜	16.4~16.6	17.3~19.4	17.5~20.5	17.8~20.3
次镜	19.6~19.7	19.9~20.4	19.9~20.6	20.0~20.6
前镜筒	20.0~20.3	20.0~20.3	20.0~20.3	20.1~20.3
主承力结构	19.6~20.3	19.7~20.3	19.7~20.5	19.7~20.4
CMOS器件	7.8~7.9	7.7~9.8	7.2~22.2	7.2~22.9
制冷机压缩机	1.1	4.2~5.0	4.4~5.2	4.4~5.3
制冷机膨胀机	0.8	3.3~4.5	3.3~4.5	3.4~5.0
红外焦面电路盒	9.7~10.0	9.3~16.5	9.3~16.5	9.3~17.3
红外视频电路盒	8.5~11.6	8.3~14.3	8.3~14.5	8.3~14.3
红外电源盒	4.1~5.1	2.6~6.7	2.7~6.8	2.7~7.1
可见光电源盒	2.1~2.9	4.7~11.3	4.7~11.4	4.8~11.9

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