Fabrication and test for Φ520 mm secondary mirror of on-axis three mirror space camera

Xiaohui, 孟晓辉 Meng; Yonggang, 王永刚 Wang; Xianmei, 马仙梅 Ma; Wenqing, 李文卿 Li; Ang, 李昂 Li; Ji-you, 张继友 Zhang

doi:10.3788/irla201746.0818002

Cited by 2 publications

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“…In the first of the three processes, aspheric face milling is performed by first trimming the lens to the closest possible sphere and then driving the grinding wheel in a high-speed axial motion by ultrasonic waves, which in turn results in a lens close to the desired asphere. By calculating the respective milling amounts in each coordinate, a prototype of a lens with a large margin of error can be obtained [5].…”

Section: Manufacturingmentioning

confidence: 99%

Optical and structural designs for GEO orbit remote-sensing satellite and its camera system

2023

TNS

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Since 1957, when the Soviet Union launched the first artificial satellite, Sputnik I, attempts have been made to bring convenience to people by interacting with terrestrial facilities through orbital space. Geostationary Earth-orbiting remote sensing satellites provide the ability to continuously scan and explore a specific area, allowing researchers to obtain more accurate information about the Earth, which benefits mankind in many ways. This paper analyzes the payload satellite camera carried by remote sensing satellites, explains the working principle of the camera, and outlines the relevant parameters and their concepts. Taking China's Gaofen-4 as an example, it analyzes the design and limitations of the common satellite camera used in this template from the perspectives of thermodynamic, mechanical, and optical environments. Meanwhile, the article gives an outlook on the future development trend of Geostationary Earth orbit remote sensing satellites.

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Section: Manufacturingmentioning

confidence: 99%