High-precision Photogrammetric Surface Figure Measurements under Cryogenic Environment
文献类型：期刊论文
| 作者 | Lou Zheng; Qian Yuan; Fan Shenghong; Liu Changru; Wang Hairen; Zuo Yingxi; Cheng Jingquan; Yang Ji |
| 刊名 | Acta Astronomica Sinica
 |
| 出版日期 | 2016 |
| 卷号 | 57期号:1页码:115-124 |
| 英文摘要 | Limited by the working temperature of the measurement equipments, most of the high-precision surface figure measurement techniques cannot be applied under a cryogenic environment. This paper reports the first attempt to measure the surface figure of a high-precision terahertz reflector panel under low temperatures based on photogrammetry. The measurement employs a high resolution industrial camera sitting on an automatic experimental platform which enables photos been taken in an automatic fashion inside a climate chamber. A repeatable accuracy of 2.1 mum rms is achieved under the cryogenic environment. Furthermore, surface figure measured by a three-coordinate measuring machine under room temperature is used to calibrate the thickness variation of the paper targets. By this technique, the surface figure of an aluminum prototype panel of the 5 meter Dome A Terahertz Telescope (DATE5) is measured from room temperature down to 55°C. |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/16822]  |
| 专题 | 紫金山天文台_毫米波和亚毫米波技术实验室 |
| 推荐引用方式 GB/T 7714 | Lou Zheng,Qian Yuan,Fan Shenghong,et al. High-precision Photogrammetric Surface Figure Measurements under Cryogenic Environment[J]. Acta Astronomica Sinica,2016,57(1):115-124. |
| APA | Lou Zheng.,Qian Yuan.,Fan Shenghong.,Liu Changru.,Wang Hairen.,...&Yang Ji.(2016).High-precision Photogrammetric Surface Figure Measurements under Cryogenic Environment.Acta Astronomica Sinica,57(1),115-124. |
| MLA | Lou Zheng,et al."High-precision Photogrammetric Surface Figure Measurements under Cryogenic Environment".Acta Astronomica Sinica 57.1(2016):115-124. |
入库方式： OAI收割
来源：紫金山天文台
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