Differential correction method applied to measurement of the FAST reflector
文献类型：期刊论文
| 作者 | Li, Xin-Yi1,2; Zhu, Li-Chun1; Hu, Jin-Wen1; Li, Zhi-Heng1 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 16期号:8页码:121-U32 |
| 关键词 | telescopes FAST measurement differential correction |
| 英文摘要 | The Five-hundred-meter Aperture Spherical radio Telescope (FAST) adopts an active deformable main reflector which is composed of 4450 triangular panels. During an observation, the illuminated area of the reflector is deformed into a 300-m diameter paraboloid and directed toward a source. To achieve accurate control of the reflector shape, positions of 2226 nodes distributed around the entire reflector must be measured with sufficient precision within a limited time, which is a challenging task because of the large scale. Measurement of the FAST reflector makes use of stations and node targets. However, in this case the effect of the atmosphere on measurement accuracy is a significant issue. This paper investigates a differential correction method for total stations measurement of the FAST reflector. A multi-benchmark differential correction method, including a scheme for benchmark selection and weight assignment, is proposed. On site evaluation experiments show there is an improvement of 70%-80% in measurement accuracy compared with the uncorrected measurement, verifying the effectiveness of the proposed method. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000381832700004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6788]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xin-Yi,Zhu, Li-Chun,Hu, Jin-Wen,et al. Differential correction method applied to measurement of the FAST reflector[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(8):121-U32. |
| APA | Li, Xin-Yi,Zhu, Li-Chun,Hu, Jin-Wen,&Li, Zhi-Heng.(2016).Differential correction method applied to measurement of the FAST reflector.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(8),121-U32. |
| MLA | Li, Xin-Yi,et al."Differential correction method applied to measurement of the FAST reflector".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.8(2016):121-U32. |
入库方式： OAI收割
来源：国家天文台
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