Institutional Repository of Radio Astronomy Research Laboratory
| Analysis and Research on the Centimeter Band Receiver Amplitude Calibration Method | |
Wang, Kai1,2,3 ; Chen, Maozheng1,2,3; Ma, Jun1,2,3; Duan, Xuefeng1,2,3; Wang, Yang1,2,3; Cao, Liang1,2,3; Yan, Hao1,2,3; Xiang, Binbin1,2
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| 2020-07-03 | |
| Source Publication | ADVANCES IN ASTRONOMY
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| ISSN | 1687-7969 |
| Volume | 2020Pages:8484610 |
| Contribution Rank | 1 |
| Abstract | The receiver is a signal receiving device in a radio telescope system. As an important parameter to characterize the receiver performance, noise temperature is very practical to calibrate accurately. The traditional receiver noise temperature calibration method is the cold and ambient load method. Through the establishment of K-band ambient receiver, and its amplitude calibration test platform of the cold and ambient load method, chopper wheel method, and ambient and hot load method, comparison and analysis of the above three methods were carried out. The test and calculation results show that the test accuracy of the cold and ambient load method is about 1.3%, that of the chopper wheel method (nonlow elevation) is about 3%, and that of the ambient and hot load method is about 9%. The test accuracy of the ambient and hot load method is slightly lower than that of the above two methods. The analysis is mainly due to the uncertainty of the hot load temperature and the small temperature difference between the two loads, which leads to the deterioration of the overall accuracy. But the advantage is that the method can perform real-time calibration in the process of observation, and it is easier to implement than the traditional cold and ambient load method. The results of noise temperature measurement are compared with those of theoretical calculation, the error is basically within 10%, and it can satisfy the demand of the noise temperature test. In the future, we expect that on the basis of increasing the hot load temperature, further experiments were carried out on the thermostatic treatment of hot load and the accuracy of temperature acquisition, and finally we hope that this method can better meet the testing requirements of receiver noise temperature and radio source amplitude calibration. |
| DOI | 10.1155/2020/8484610 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Xinjiang Key Laboratory of Radio Astrophysics (Microwave Technology)[2015KL012] ; National Natural Science Foundation of China[11973078] ; National Natural Science Foundation of China[11903077] ; National Natural Science Foundation of China[11603064] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2019D01A99] ; Operation, Maintenance, and Upgrading Fund for Astronomical Telescopes and Facility Instruments |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000552776700001 |
| Publisher | HINDAWI LTD |
| Funding Organization | Xinjiang Key Laboratory of Radio Astrophysics (Microwave Technology) ; National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Operation, Maintenance, and Upgrading Fund for Astronomical Telescopes and Facility Instruments |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/3601 |
| Collection | 射电天文研究室_微波技术实验室 110米口径全可动射电望远镜（QTT）_技术成果 |
| Corresponding Author | Wang, Kai |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 3.Xinjiang Key Lab Microwave Technol, Urumqi 830011, Peoples R China |
| 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 | Wang, Kai,Chen, Maozheng,Ma, Jun,et al. Analysis and Research on the Centimeter Band Receiver Amplitude Calibration Method[J]. ADVANCES IN ASTRONOMY,2020,2020:8484610. |
| APA | Wang, Kai.,Chen, Maozheng.,Ma, Jun.,Duan, Xuefeng.,Wang, Yang.,...&Xiang, Binbin.(2020).Analysis and Research on the Centimeter Band Receiver Amplitude Calibration Method.ADVANCES IN ASTRONOMY,2020,8484610. |
| MLA | Wang, Kai,et al."Analysis and Research on the Centimeter Band Receiver Amplitude Calibration Method".ADVANCES IN ASTRONOMY 2020(2020):8484610. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Wang-2020-Analysis a（4976KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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