双通道离轴遥感相机高稳定性光机结构设计
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摘要
多光谱遥感相机提供的光谱图像信息具有极高的应用价值。为突破CCD成像器件谱段数量的限制、增加单台相机的谱段数量,提出了一种双通道的解决方法。从光学系统入手,对一种双通道离轴多光谱遥感相机进行了高稳定性光机结构设计。首先,通过使用四点球头支撑技术实现了对大口径主镜的高稳定性支撑,保证了在各个工况下反射镜面形精度满足使用要求。之后,对相机的焦面组件、主框架及隔振系统进行了设计及优化,保证了双通道离轴遥感相机在提供八个多光谱谱段的同时,具有良好的结构稳定性。最后,对整个相机进行有限元分析和力学环境试验,结果表明相机具有较高的稳定性,符合设计预期。
Spectral image information provided by multispectral remote sensing cameras has extremely high application value. In order to break through the limitation of the number of spectral segments of CCD imaging devices and increase the number of spectral segments of a single camera, a two-channel solution was proposed. Starting from the optical system, a high-stability opto-mechanical structure was designed for a dual-channel off-axis multi-spectral remote sensing camera. Firstly, the high stability support of the large-diameter primary mirror was realized by using the four-point spherical support technology, which ensured that the mirror surface shape accuracy met the use requirements under various working conditions. Then, the camera ′ s focal plane component, main frame and vibration isolation system were designed and optimized to ensure that the dual-channel off-axis remote sensing camera had good structural stability while providing eight multi-spectral segments. Finally, the finite element analysis and mechanical environment test of the entire camera show that the camera has high stability and meets the design expectations.
Spectral image information provided by multispectral remote sensing cameras has extremely high application value. In order to break through the limitation of the number of spectral segments of CCD imaging devices and increase the number of spectral segments of a single camera, a two-channel solution was proposed. Starting from the optical system, a high-stability opto-mechanical structure was designed for a dual-channel off-axis multi-spectral remote sensing camera. Firstly, the high stability support of the large-diameter primary mirror was realized by using the four-point spherical support technology, which ensured that the mirror surface shape accuracy met the use requirements under various working conditions. Then, the camera ′ s focal plane component, main frame and vibration isolation system were designed and optimized to ensure that the dual-channel off-axis remote sensing camera had good structural stability while providing eight multi-spectral segments. Finally, the finite element analysis and mechanical environment test of the entire camera show that the camera has high stability and meets the design expectations.
引文
[1] Fan Bin, Cai Weijun, Zhang Xiaohong, et al.Technology of the multi-spectral camera of ZY-3satellite[J]. Spacecraft Recovery&Remote Sensing,2013, 33(3):75-82.(in Chinese)
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[7] Wang Ping, Zhang Guoyu, Gao Yujun, et al. Optics and machine design of visible light and infrared dual spectral aerial reconnaissance camera[J]. Journal of Mechanical Engineering, 2012, 48(14):11-16.(in Chinese)
[8] Wang Yue, Li Shiqi, Zhang Jinlong, et al. Integrated design analysis of remote sensing camera on geostationary earth orbit satellite[J]. Spacecraft Recovery&Remote Sensing, 2016, 37(4):40-48.(in Chinese)
[9] Shao Shuai. Integrated design of optical-mechanism and heat for shared aperture infrared system with multispectrum band[J]. Chinese Journal of Scientific Instrument, 2013, 32(2):387-393.(in Chinese)
[10] Li Chang, He Xin, Liu Qiang. Design and topology optimization of space camera frame fabricated by high volume fraction SiC/Al composite material[J]. Infrared and Laser Engineering, 2014, 43(8):2521-2530.(in Chinese)
[11] Wu Yifan, Zheng Bailin, He Luyang, et al. Equivalent conversion method of gray-scale elements for SIMP in structures topology optimization[J]. Journal of Computer-Aided Design&Computer Graphics, 2017,29(4):759-767.(in Chinese)
[2] Meng Qingyu, Wang Wei, Ji Zhenhua, et al. Design of off-axis three-mirror system based on integration of primary and tertiary mirrors[J]. Infrared and Laser Engineering, 2015, 42(2):578-582.(in Chinese)
[3] Wang Kejun, Xuan Ming, Dong Jihong, et al. Design method of reflector component structure of space remote sensor[J]. Infrared and Laser Engineering,2016, 45(11):1113001.(in Chinese)
[4] Sha Wei, Chen Changzheng, Xu Yanjun, et al.Integrated primary and tertiary mirror components from common base line of off-axis TMA space camera[J].Optics and Precision Engineering, 2015, 23(6):1612-1619.(in Chinese)
[5] Xu Hong, Guan YingJun. Structural design of 1 m diameter space mirror component of space camera[J].Optics and Precision Engineering, 2013, 21(6):1488-1495.(in Chinese)
[6] Liu Fuhe, Cheng Zhifeng, Shi Lei, et al. Design and analysis of supporting structure for rectangular mirror[J]. Infrared and Laser Engineering, 2015, 44(5):1512-1517.(in Chinese)
[7] Wang Ping, Zhang Guoyu, Gao Yujun, et al. Optics and machine design of visible light and infrared dual spectral aerial reconnaissance camera[J]. Journal of Mechanical Engineering, 2012, 48(14):11-16.(in Chinese)
[8] Wang Yue, Li Shiqi, Zhang Jinlong, et al. Integrated design analysis of remote sensing camera on geostationary earth orbit satellite[J]. Spacecraft Recovery&Remote Sensing, 2016, 37(4):40-48.(in Chinese)
[9] Shao Shuai. Integrated design of optical-mechanism and heat for shared aperture infrared system with multispectrum band[J]. Chinese Journal of Scientific Instrument, 2013, 32(2):387-393.(in Chinese)
[10] Li Chang, He Xin, Liu Qiang. Design and topology optimization of space camera frame fabricated by high volume fraction SiC/Al composite material[J]. Infrared and Laser Engineering, 2014, 43(8):2521-2530.(in Chinese)
[11] Wu Yifan, Zheng Bailin, He Luyang, et al. Equivalent conversion method of gray-scale elements for SIMP in structures topology optimization[J]. Journal of Computer-Aided Design&Computer Graphics, 2017,29(4):759-767.(in Chinese)