QTT超宽带多波束信号接收与处理系统
Ultra wideband and multi-beam signal receiving and processing system of QTT
查看参考文献36篇
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文摘
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新疆奇台拟建的110 m全可动射电望远镜(QiTai Radio Telescope, QTT),主要用于脉冲星观测、引力波及黑洞探测、恒星形成和星系起源等基础科学研究领域.为了满足众多科学需求,将配备各种超宽带、多波束、高灵敏度接收机与处理系统,其主要功能是将射电望远镜收到的微弱的电磁波信号经接收机放大、滤波、变频之后在数字终端进行处理.由于该系统决定了射电望远镜的工作带宽、瞬时带宽和视场,并与灵敏度具有紧密联系,因此作为该大型射电望远镜的重要组成部分,对于望远镜的性能具有至关重要的作用.本文具体展示了QTT超宽带多波束信号接收与处理系统配置方案和主要性能指标,系统地论述了QTT接收机与信号采集与处理系统初步技术方案,分析了信号接收与处理系统的关键技术问题. |
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其他语种文摘
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The proposed 110-m full-steerable radio telescope (Qitai radio telescope, QTT) in Xinjiang is mainly used in the fields of basic scientific research, such as pulsar observation, gravitational wave and black hole detection, star formation, galactic origin. At the same time, it serves national projects such as China Lunar Exploration project and Mars exploration. In order to meet the scientific needs, QTT will be equipped with a variety of ultra-wideband, multi-beam, high-sensitivity receivers and signal processing systems, to treat the weak electromagnetic wave signal received by the radio telescope, such as amplification, filtering, frequency conversion and other processing and sending to the digital terminal and processed. As this system determines the operating bandwidth, instantaneous bandwidth and field of view of radio telescopes, and is closely related to sensitivity, as a key part of the large radio telescope, it plays an important role in the performance of telescopes. In this paper, the configuration scheme and main performance index of QTT UWB and multibeam signal receiving and processing system are demonstrated in detail. This paper systematically discusses the preliminary technical scheme of QTT receiver and signal acquisition and processing system, and analyzes the key technical problems of signal receiving and processing system. |
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来源
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中国科学. 物理学
, 力学, 天文学,2019,49(9):099502 【核心库】
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DOI
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10.1360/SSPMA-2019-0014
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关键词
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QTT
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接收机
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超宽带
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多波束
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信号接收与处理
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地址
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1.
中国科学院新疆天文台, 乌鲁木齐, 830011
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中国科学院射电天文重点实验室, 中国科学院射电天文重点实验室, 南京, 210008
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1674-7275 |
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学科
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天文学 |
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基金
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国家973计划
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文献收藏号
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CSCD:6579472
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