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A multi-scale deformation measurement method for large parabolic antenna surfaces based on shape sensing and ray tracing

文献类型：期刊论文

作者Zhang, Zihan1; Ye, Qian2; Wang, Na3; Meng, Guoxiang1
刊名MEASUREMENT
出版日期2025-12-01
卷号256页码:118036
关键词Large parabolic antenna Multi-scale deformation measurement Shape sensing Ray tracing
ISSN号0263-2241
DOI10.1016/j.measurement.2025.118036
产权排序3
英文摘要In the new era, large parabolic antennas are operating at increasingly higher frequencies, with deformations caused by time-varying loads such as temperature and wind receiving significant attention. Existing surface measurement methods struggle to meet the requirements for full-attitude, quasi-real-time, high-accuracy, and high-resolution measurements of large-aperture antennas. To address this challenge, we develop a multi-scale deformation measurement method based on shape sensing and ray tracing in this work. In the proposed method, the inverse finite element method (iFEM) is employed to provide small-scale deformation information of the panels, enabling shape sensing. The ray equations obtained through ray tracing and geometric continuity constraints are used to provide essential large-scale information for surface deformation measurement, specifically the rigid pose information of the panels. Simulation results using the TM-65 m antenna as an example demonstrate that the method can achieve measurement errors below 0.1 mm. Additionally, experiments are conducted on a self-built measurement system, where high-accuracy calibration was achieved using a camera-scanner fusion approach. The experimental results demonstrate that the proposed method achieves a measurement error of about 0.2 mm and a relative error of about 5%. The measurement time in the experimental setup is approximately 30 s, which is 1/20th of that required by the laser scanning method.
WOS关键词GRAVITY DEFORMATION ; REFLECTOR ANTENNA ; ELEMENT ; DISPLACEMENT ; ADJUSTMENT ; HOLOGRAPHY ; STRAIN ; FOCUS
资助项目National Key Basic Research and Development Program of China[2021YFC2203501] ; Key Laboratory of Radio Astronomy and Technology (Chinese Academy of Sciences)[100101]
WOS研究方向Engineering ; Instruments & Instrumentation
语种英语
WOS记录号WOS:001521003700001
出版者ELSEVIER SCI LTD
资助机构National Key Basic Research and Development Program of China ; Key Laboratory of Radio Astronomy and Technology (Chinese Academy of Sciences)
源URL[http://ir.xao.ac.cn/handle/45760611-7/7882]  
专题脉冲星研究团组
通讯作者Ye, Qian
作者单位1.Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Xinjiang 830011, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Zihan,Ye, Qian,Wang, Na,et al. A multi-scale deformation measurement method for large parabolic antenna surfaces based on shape sensing and ray tracing[J]. MEASUREMENT,2025,256:118036.
APA Zhang, Zihan,Ye, Qian,Wang, Na,&Meng, Guoxiang.(2025).A multi-scale deformation measurement method for large parabolic antenna surfaces based on shape sensing and ray tracing.MEASUREMENT,256,118036.
MLA Zhang, Zihan,et al."A multi-scale deformation measurement method for large parabolic antenna surfaces based on shape sensing and ray tracing".MEASUREMENT 256(2025):118036.

入库方式： OAI收割

来源：新疆天文台

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