| 德令哈13.7m望远镜多波束接收机的运行 |
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| 引用本文： | 李振强,张旭国,徐烨,左营喜,李积斌,孙继先,逯登荣,巨秉刚,张海龙,金风娟,罗春盛.德令哈13.7m望远镜多波束接收机的运行[J].天文学报,2021,62(3):24. |
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| 作者姓名： | 李振强 张旭国 徐烨 左营喜 李积斌 孙继先 逯登荣 巨秉刚 张海龙 金风娟 罗春盛 |
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| 作者单位： | 中国科学院紫金山天文台 南京 210023;中国科学院射电天文重点实验室 南京 210023 |
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| 基金项目： | 国家自然科学基金项目(11773084)资助 |
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| 摘 要： | 德令哈13.7 m望远镜是中国最重要的射电望远镜之一.望远镜自安装超导成像频谱仪以及采用飞行观测模式以来,运行近10 yr.在此期间,望远镜开展并完成大量的天文观测,累积了巨量的天文数据,取得了一系列重要的科研成果.介绍了超导成像频谱仪在天文观测中的运行状态,运行中疑难问题、故障现象及解决方案.详述了超导成像频谱仪各方面性能测试及多年来的性能分析,包含接收机噪声温度及望远镜系统噪声温度、镜像抑制比、接收机稳定性、波束性能等方面.列举了超导成像频谱仪更新发展方面的工作,包含本振功率自动化调整、边带分离型超导混频器预放大电路的更新、控制程序的优化等.总结经验和规律,承前启后,将过去的超导成像频谱仪的维护运行经验应用到之后新一代大规模接收机系统中.
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| 关 键 词： | 射电天文 多波束接收机 接收机噪声 边带分离 超导SIS混频器 |
| 收稿时间： | 2020/8/13 0:00:00 |
Operation of Multibeam Receiver of Delingha 13.7m Telescope |
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| LI Zhen-qiang,ZHANG Xu-guo,XU Ye,ZUO Ying-xi,LI Ji-bin,SUN Ji-xian,LU Deng-rong,JU Bing-gang,ZHANG Hai-long,JIN Feng-juan,LUO Chun-sheng.Operation of Multibeam Receiver of Delingha 13.7m Telescope[J].Acta Astronomica Sinica,2021,62(3):24. |
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| Authors: | LI Zhen-qiang ZHANG Xu-guo XU Ye ZUO Ying-xi LI Ji-bin SUN Ji-xian LU Deng-rong JU Bing-gang ZHANG Hai-long JIN Feng-juan LUO Chun-sheng |
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| Institution: | Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023;Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210023 |
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| Abstract: | Delingha 13.7m telescope is one of the most important radio telescopes in China. Since installing superconducting spectroscopic array receiver (SSAR) and adopting On The Fly (OTF) observation mode, the telescope has operated for nearly 10 years. During this period, a large number of astronomical observation projects have been carried out and completed, a large amount of astronomical data has been observed, and a series of important scientific research results have been achieved. This paper introduces the operation status of SSAR in astronomical observation, the problems in operation, the phenomena of faults and solutions. The performance test and performance analysis of SSAR are described in detail, including receiver noise temperature and telescope system noise temperature, image rejection ratio (IRR), receiver stability, beam performance and so on. The update and development of SSAR is listed, including the automatic adjustment of LO (Local Oscillator) power, the updating of pre-amplification circuit of sideband separation superconducting mixer, and the optimization of control program, etc. This paper summarizes the experience and rules, and connects the past with the future, and applies the experience of maintenance and operation of SSAR to the next generation of large-scale receiver system. |
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| Keywords: | radio astronomy multibeam receiver receiver noise sideband separation superconductor-insulator-superconductor mixer |
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