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| 乌鲁木齐VLBI站的一种新定标方案 | |
| Alternative Title | A new calibration method of the 25 m atenna system at urumqi VLBI station |
| 李劲 | |
| 1997 | |
| Source Publication | 宇航计测技术
 |
| ISSN | 1000-7202 |
| Volume | 17Issue:3Pages:18-22 |
| Contribution Rank | 1 |
| Abstract | 提出了一种利用天线噪声作为冷噪声源进行标的方案，这套方案在国际和国内的射电天介暗箭我提出，与经典的方法不同，其优点是简单简行，准确可靠，定标精度可以达到二级标准，尤其是采用这种方案后。减少了系统中的部件接口，使系统噪声在大降低了（２０－３０Ｋ），系统也更加可靠稳定，是一种切实可行的工作方法，这种方案也可以 利用标准射电源和冷空进行定标。 |
| Other Abstract | In this paper, we proposed a new calibration method of the 25 m atenna system at Urumqi VLBI station. This method is first proposed in radio astronomy field. Atenna noise as cold noise source and analyzer measurment errors of this method are described. The r.m.s. is within about 0.5 K under conditions of correct operation. and reached to the national second-class standard. We think this new method is simple, flexible and reliable measurement in engineering, especially in cutting down system interface in order reduce system temperature(reduce about 20~50 K) and increases system stability. By making use of standard radio source and sky background, the calibration can be compleled with the same method. |
| Keyword | 定标 冷热噪声源 天线噪声 大气噪声 |
| Subject Area | 天文仪器、天文技术与数据 |
| Indexed By | CSCD |
| Language | 中文 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/130 |
| Collection | 射电天文研究室 |
| Affiliation | 中国乌鲁木齐天文台 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 李劲. 乌鲁木齐VLBI站的一种新定标方案[J]. 宇航计测技术,1997,17(3):18-22. |
| APA | 李劲.(1997).乌鲁木齐VLBI站的一种新定标方案.宇航计测技术,17(3),18-22. |
| MLA | 李劲."乌鲁木齐VLBI站的一种新定标方案".宇航计测技术 17.3(1997):18-22. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 乌鲁木齐VLBI站的一种新定标方案.pd（120KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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