| 米波太阳射电频谱仪的科学目标和技术方案 |
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| 引用本文： | 施硕彪,董亮,高冠男,汪敏,夏志国.米波太阳射电频谱仪的科学目标和技术方案[J].天文研究与技术,2011(3):229-235. |
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| 作者姓名： | 施硕彪 董亮 高冠男 汪敏 夏志国 |
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| 作者单位： | 中国科学院国家天文台云南天文台; |
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| 基金项目： | 国家自然科学基金(10978006)资助 |
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| 摘 要： | 介绍了70～700MHz低频太阳射电频谱仪的科学目标和技术方案,给出了11m 网状抛物面天线、接收系统、数字频谱终端的技术指标.并对系统的整机噪声系数、灵敏度、最小可测流量密度、LNA输入端的噪声功率进行了估计.系统频谱分辨率优于0.2MHz,时间分辨率最高可达2 ms.
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| 关 键 词： | 米波太阳射电频谱仪 接收机 噪声系数 灵敏度 |
Scientific Objectives and Technical Design of a Meter-Wave Spectrometer for Solar Radio Observation |
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| Shi Shuobiao,Dong Liang,Gao Guannan,Wang Min,Xia Zhiguo.Scientific Objectives and Technical Design of a Meter-Wave Spectrometer for Solar Radio Observation[J].Astronomical Research & Technology,2011(3):229-235. |
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| Authors: | Shi Shuobiao Dong Liang Gao Guannan Wang Min Xia Zhiguo |
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| Institution: | Shi Shuobiao,Dong Liang,Gao Guannan,Wang Min,Xia Zhiguo(National Astronomical Observarories/Yunnan Observatory,Chinese Academy of Sciences,Kunming 650011,China) |
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| Abstract: | In this paper,we describe the scientific objectives and technical design of a new solar radio spectrometer working in the frequency range from 70 to 700 MHz(meter wave range).We also give the parameters of an 11-meter mesh antenna,a receiver system,and a digital spectrometer.We subsequently estimate the system noise coefficients,sensitivities,lowest observable flux densities,and input noise powers before the LNA(Low Noise Amplifier).The spectral resolution of this spectrometer is better than 0.2 MHz and the... |
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| Keywords: | Meter-wave spectrometer for solar observation Receiver System noise coefficient Sensitivity |
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