| 在月球背面进行低频射电天文观测的关键技术研究 |
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| 作者姓名： | 纪奕才 赵博 方广有 平劲松 吴伟仁 宁远明 卢伟 周斌 |
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| 作者单位： | 中国科学院电磁辐射与探测技术重点实验室 北京 100190;中国科学院大学 北京 100049,中国科学院电磁辐射与探测技术重点实验室 北京 100190,中国科学院电磁辐射与探测技术重点实验室 北京 100190;中国科学院大学 北京 100049,中国科学院国家天文台 北京 100012,探月与航天工程中心 北京 100037,探月与航天工程中心 北京 100037,中国科学院电磁辐射与探测技术重点实验室 北京 100190;中国科学院大学 北京 100049,中国科学院电磁辐射与探测技术重点实验室 北京 100190 |
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| 摘 要： | 月球具有足够大的尺寸,能够有效地遮挡来自地球的低频电磁波干扰,因此月球背面是进行低频射电天文观测的最佳场所。本文论述了利用低频射电频谱仪在月球背面进行空间低频射电天文观测的意义,给出了低频射电频谱仪工作原理、科学探测目标和系统组成。研究了低频射电频谱仪的设计,并采用低频射电频谱仪对北京中关村地区空中低频电磁波辐射频谱进行了试验探测,结果表明:低频射电频谱仪能够清晰地探测到0.1~40 MHz频带内的广播电台及授时台等发射的低频电磁波信号。
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| 关 键 词： | 射电天文 低频射电频谱仪 月球背面 太阳爆发 |
| 收稿时间： | 2017/3/13 0:00:00 |
| 修稿时间： | 2017/3/28 0:00:00 |
Key Technologies of Very Low Frequency Radio Observations on the Lunar Far-Side |
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| Authors: | JI Yicai ZHAO Bo FANG Guangyou PING Jinsong WU Weiren NING Yuanming LU Wei and ZHOU Bin |
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| Institution: | Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China,Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China,National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China,Lunar Exploration and Space Program Center, Beijing 100037, China,Lunar Exploration and Space Program Center, Beijing 100037, China,Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China and Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | The Moon has a large size,which can effectively block the low-frequency electromagnetic interference from the Earth,so the lunar far-side is the best place for low-frequency radio astronomical observation. In this paper,the significance of using a very low frequency radio spectrometer(VLFRS)for the low frequency radio astronomical observation on the back of the moon is discussed. And the goals,as well as the basic principles,design,composition and achievements of the VLFRS are described. Finally,experiments on the radiation spectrum of low frequency electromagnetic wave in Zhongguancun area,Beijing are analyzed. The results show that the low frequency radio signals in the 0.1~40 MHz band, which are emitted by the radio stations and the time-service centers, can be clearly detected by the VLFRS. |
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| Keywords: | radio astronomical observation very low frequency radio spectrometer lunar far side Solar burst |
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