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| 基于虚拟相机的天线俯仰轴形变快速高精度测量方法研究 | |
| Alternative Title | Research on Rapid and High Precision Measurement Method of Antenna Pitch Axis Deformation Based on Virtual Camera |
于琳琳1,4 ; 许谦1,2,3; 王娜1,2,3
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| 2022-05-01 | |
| Source Publication | 天文研究与技术
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| ISSN | 1672-7673 |
| Volume | 19Issue:3Pages:235-243 |
| Contribution Rank | 1 |
| Abstract | 磨损和扭转造成天线俯仰轴结构小尺度变形的快速高精度测量，对修正大口径全可动射电望远镜天线指向精度以及俯仰轴主动健康监测有非常重要的价值。本文提出一种基于虚拟相机的俯仰轴形变测量方法，通过构建单相机测量系统进行数据采集，并建立测量系统数学模型，借助虚拟相机将结构变形转换为虚拟相机空间变换。实验结果表明，该方法在平移分量综合精度可达0.2825mm，旋转分量精度最低可达0.2918~(o)，能够实现俯仰轴1mm尺度变形的快速测量。该系统及其方法具有非接触、精度高、快速性等优点，能满足大口径高频段高精度的射电望远镜俯仰轴长期快速测量需求，也适用于其他大结构小变形测量。 |
| Other Abstract | Long term wear and torsion will cause small-scale deformation of antenna pitch axis structure. The rapid and high-precision measurement of this deformation is of great value for the pointing accuracy correction of large aperture fully movable antenna and the health monitoring of pitch axis. In this paper, a single camera measurement system is built, a virtual camera mathematical model is established, and the structural deformation is transformed into spatial transformation for solution, so a rapid measurement method of pitch axis deformation is proposed. The experimental results show that the method can achieve an integrated accuracy of 0.282 5 mm (rms) for the translation component and 0.291 8° for the rotation component, and is capable of rapid measurement of 1mm scale deformation of the pitch axis. The system and its method have the advantages of non-contact, high precision and rapidity, and can meet the demand for long-term rapid measurements of the pitch axis of large-aperture, high-frequency radio telescopes with high accuracy, and are also applicable to the measurement of small deformations of other large structures. |
| Keyword | 虚拟相机 大口径射电望远镜 天线俯仰轴 小尺度变形 目标空间变换 |
| DOI | 10.14005/j.cnki.issn1672-7673.20210430.001 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:7192908 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5110 |
| Collection | 射电天文研究室_天线技术实验室 |
| Corresponding Author | 许谦 |
| Affiliation | 1.中国科学院新疆天文台，新疆乌鲁木齐830011; 2.中国科学院射电天文重点实验室，江苏南京210033; 3.新疆射电天体物理重点实验室，新疆乌鲁木齐830011; 4.中国科学院大学，北京100049 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 于琳琳,许谦,王娜. 基于虚拟相机的天线俯仰轴形变快速高精度测量方法研究[J]. 天文研究与技术,2022,19(3):235-243. |
| APA | 于琳琳,许谦,&王娜.(2022).基于虚拟相机的天线俯仰轴形变快速高精度测量方法研究.天文研究与技术,19(3),235-243. |
| MLA | 于琳琳,et al."基于虚拟相机的天线俯仰轴形变快速高精度测量方法研究".天文研究与技术 19.3(2022):235-243. |
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| 基于虚拟相机的天线俯仰轴形变快速高精度测（701KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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