中阿40m射电望远镜选址与电磁环境监测

发布时间：2018-02-11 03:22

本文关键词： 射电望远镜电磁环境测量方法数据处理天文选址　出处：《天文学进展》2014年03期 　论文类型：期刊论文

【摘要】：优良站址的选择是射电望远镜完成既定科学目标并实现高效运行的重要保障。影响射电望远镜选址的主要因素包括电磁环境、水文、气象、地质条件、隔离性与可及性等。对于射电天文观测而言,来自宇宙天体的射电信号往往极其微弱,对望远镜系统及设备的灵敏度要求极高。然而,随着人类活动的不断加强,人们日常工作和生活中使用的电子通讯设备越来越多,无线电干扰源呈爆炸式涌现。在射电望远镜选址工作中,进行电磁环境监测,选择一个电磁环境良好的站址,对于射电望远镜实现常规观测运行、获取有效数据资料至关重要。同时,电磁环境监测结果也是射电望远镜接收机系统研制、站址电磁环境及无线电宁静区立法保护的重要依据。中阿天文学者和技术人员历时1年半完成了16个候选站址的初步勘察,并对优选出的3个主要候选站址进行了深入细致的电磁环境监测工作,获得了大量可靠数据。中阿双方依据电磁环境监测结果并结合各主要候选站址的水文、气象、地质及道路等条件,最终将位于Talacasto戈壁的3号候选站址确定为中阿CART射电望远镜的建设站点。
[Abstract]:The selection of good stations is an important guarantee for radio telescopes to accomplish the established scientific objectives and achieve efficient operation. The main factors affecting the location of radio telescopes include electromagnetic environment, hydrology, meteorology and geological conditions. Isolation and accessibility, etc. For radio astronomical observations, radio signals from cosmic objects are often extremely weak and highly sensitive to telescope systems and equipment. However, as human activity increases, More and more electronic communication equipments are used in people's daily work and daily life, and radio interference sources appear explosively. In the site selection of radio telescopes, the electromagnetic environment is monitored and a good electromagnetic environment is chosen. It is very important for radio telescope to realize routine observation and to obtain effective data. At the same time, the result of electromagnetic environment monitoring is also the development of radio telescope receiver system. The important basis for the legislative protection of the electromagnetic environment of the station site and the legislative protection of the radio quiet area. Chinese and Argentine astronomists and technicians completed a preliminary survey of 16 candidate sites for one and a half years. In addition, the three main candidate sites selected were monitored by intensive and meticulous electromagnetic environment monitoring, and a large number of reliable data were obtained. Both China and Arab countries based on the results of electromagnetic environment monitoring and combined with the hydrology and meteorology of the main candidate sites, Geological and road conditions will eventually determine the 3 candidate site located in the Talacasto Gobi as the construction site of the CART radio telescope.
【作者单位】：中国科学院国家天文台;中国科学院射电天文重点实验室;贵州省无线电监测站;阿根廷国立圣胡安大学;
【基金】：国家自然科学基金(11073027) 科技部重大国际合作项目(2010DFA02710) 大射电望远镜站址电磁环境的系统化测试与研究(11173037) 北京市自然科学基金资助项目(1144015)
【分类号】：P111.44

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