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题名: Antenna system characteristics and solar radio burst observations
作者: Li, Sha1, 2, 3; Yan, Yi-Hua1, 2; Chen, Zhi-Jun1, 2; Wang, Wei1, 2; Liu, Dong-Hao1
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期: 2015-11-01
卷号: 15, 期号:11, 页码:1917-1930
关键词: techniques: image processing ; techniques: interferometric ; techniques: image processing
DOI: 10.1088/1674-4527/15/11/013
文章类型: Article
英文摘要: The Chinese Spectral Radio Heliograph (CSRH) is an advanced aperture synthesis solar radio heliograph, independently developed by National Astronomical Observatories, Chinese Academy of Sciences. It consists of 100 reflector antennas, which are grouped into two antenna arrays (CSRH-I and CSRH-II) for low and high frequency bands respectively. The frequency band of CSRH-I is 0.4-2 GHz and that for CSRH-II is 2-15 GHz. In the antenna and feed system, CSRH uses eleven feeds to receive signals coming from the Sun. The radiation pattern has a lower side lobe and the back lobe of the feed is well illuminated. The characteristics of gain G and antenna noise temperature T affect the quality of solar radio imaging. For CSRH, the measured G is larger than 60 dBi and T is less than 120 K. After CSRH-I was established, we successfully captured a solar radio burst between 1.2-1.6 GHz on 2010 November 12 using this instrument and this event was confirmed through observations with the Solar Broadband Radio Spectrometer at 2.84 GHz and the Geostationary Operational Environmental Satellite. In addition, an image obtained from CSRH-I clearly revealed the profile of the solar radio burst. The other observational work involved the imaging the Fengyun-2E geosynchronous satellite which is assumed to be a point source. Results indicate that the data processing method applied in this study for deleting errors in a noisy image could be used for processing images from other sources.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: RADIOHELIOGRAPH
收录类别: SCI
项目资助者: National Basic Research Program of China (973 program)(MOST2011CB811401) ; National Natural Science Foundation of China(11221063 ; National Major Scientific Equipment Research and Design project(ZDYZ2009-3) ; 10778605 ; 11003028 ; 11203042 ; U1231205)
语种: 英语
WOS记录号: WOS:000365467400013
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16077
Appears in Collections:南极天文中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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