典型文献
Gravitational Deformation Measurement Method for the Main Reflector and Sub-reflector of the 70 m Antenna by Laser Scanner
文献摘要：
Large antennas play an important role in deep space exploration and astronomical research. However, their performances are inevitably affected by the main reflector surface deformation and sub-reflector displacement resulting from the factors of wind, temperature, and gravity, among which the effect of gravity is especially pronounced. In this work, a three-dimensional laser scanner was employed to measure the main reflector and sub-reflector gravitational deformation of the Tianjin 70 m antenna at different elevation angles. Here, we solved the antenna main reflector deformation and sub-reflector displacement, and analyzed the deformation law of the antenna under the action of gravity. A new measurement method of antenna main reflector deformation and sub-reflector displacement is realized by mutual verification of the measured results and theoretical simulations. This method will help to improve the antenna performance and provide a reference to optimize the design of large-aperture antennas.
文献关键词：
中图分类号：
作者姓名：
Lian-Bo Fu;Jian-Jun Liu;Wei Yan;De-Qing Kong;Xin Ren;Chen-Di Liu;Hong-Bo Zhang
作者机构：
Key Laboratory of Lunar and Deep Space Exploration,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Lian-Bo Fu;Jian-Jun Liu;Wei Yan;De-Qing Kong;Xin Ren;Chen-Di Liu;Hong-Bo Zhang-.Gravitational Deformation Measurement Method for the Main Reflector and Sub-reflector of the 70 m Antenna by Laser Scanner)[J].天文和天体物理学研究,2022(09):1-9
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B类：
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AB值：
0.590868
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