Antenna system characteristics and solar radio burst observations

	Antenna system characteristics and solar radio burst observations
	Li, Sha1,2,3 ; Yan, Yi-Hua1,2 ; Chen, Zhi-Jun1,2 ; Wang, Wei 1,2; Liu, Dong-Hao1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2015-11-01
卷号	15 期号:11 页码:1917-1930
关键词	techniques: image processing techniques: interferometric techniques: image processing
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.
收录类别	SCI
语种	英语
WOS记录号	WOS:000365467400013
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5523]
专题	国家天文台_太阳物理研究部
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
推荐引用方式 GB/T 7714	Li, Sha,Yan, Yi-Hua,Chen, Zhi-Jun,et al. Antenna system characteristics and solar radio burst observations[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(11):1917-1930.
APA	Li, Sha,Yan, Yi-Hua,Chen, Zhi-Jun,Wang, Wei,&Liu, Dong-Hao.(2015).Antenna system characteristics and solar radio burst observations.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(11),1917-1930.
MLA	Li, Sha,et al."Antenna system characteristics and solar radio burst observations".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.11(2015):1917-1930.