Decametric Solar Radio Spectrometer Based on 4-element Beamforming Array and Initial Observational Results | |
Guo SJ(郭少杰)2,3,4; Gao GN(高冠男)1,2,4; Shen FX(沈发新)3,4; Yang FH(杨凤辉)4; Dong L(董亮)4; Wang M(汪敏)4 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2023-08-01 | |
卷号 | 23期号:8 |
关键词 | instrumentation: spectrographs methods: observational Sun: radio radiation radiation: dynamics |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/acd594 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | The dynamic spectral observation at decametric wavelength is important to study solar radio physics and space weather. However, the observing system is difficult to observe with high sensitivity at this band due to the fact that the system temperature is dominated by the sky background noise and the antenna is difficult to design with high gain. An effective solution to improve the sensitivity is constructing an antenna array based on the beamforming method. Accordingly, we develop a decametric solar radio spectrometer system based on a 4-element beamforming array. The system consists of four antennas, an 8-channel analog receiver and a digital receiver. We use the true time delay to implement the beamformer and the classical FFT method to perform spectrum analysis in the digital receiver. Operating at a frequency range of 25-65 MHz with dual-circular polarizations, the system provides high resolution dynamic spectrum with spectral resolution of & SIM;12 kHz and temporal resolution of & SIM;5.3 ms (typical). Tens of solar radio bursts have been observed successfully during the period of the trial observation, demonstrating the system's ability to detect fine structures with high spectral and temporal resolution. In this article, we present the design, implementation, and initial observational results of the decametric solar radio spectrometer system in detail. |
学科主题 | 天文学 ; 射电天文学 ; 射电天文方法 ; 太阳与太阳系 ; 太阳与太阳系其他学科 |
URL标识 | 查看原文 |
出版地 | 20A DATUN RD, CHAOYANG, BEIJING, 100101, PEOPLES R CHINA |
资助项目 | National Natural Science Foundation of China (NSFC)[11703089] ; National Natural Science Foundation of China (NSFC)[11903080] ; National SKA Program of China[2022SKA0120101] ; Yunnan Fundamental Research Projects[202 301AT070325] ; Kunming International Cooperation Base Project[GHJD-2021022] ; Yunnan Key Laboratory of Solar physics and Space Science, Kunming[202205AG070009] |
WOS关键词 | BURSTS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:001022666500001 |
资助机构 | National Natural Science Foundation of China (NSFC)[11703089, 11903080] ; National SKA Program of China[2022SKA0120101] ; Yunnan Fundamental Research Projects[202 301AT070325] ; Kunming International Cooperation Base Project[GHJD-2021022] ; Yunnan Key Laboratory of Solar physics and Space Science, Kunming[202205AG070009] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26135] |
专题 | 云南天文台_射电天文研究组 |
通讯作者 | Guo SJ(郭少杰) |
作者单位 | 1.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 2.Yunnan Key Laboratory of the Solar Physics and Space Science, Kunming 650216, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; guosj891025@ynao.ac.cn; |
推荐引用方式 GB/T 7714 | Guo SJ,Gao GN,Shen FX,et al. Decametric Solar Radio Spectrometer Based on 4-element Beamforming Array and Initial Observational Results[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2023,23(8). |
APA | Guo SJ,Gao GN,Shen FX,Yang FH,Dong L,&Wang M.(2023).Decametric Solar Radio Spectrometer Based on 4-element Beamforming Array and Initial Observational Results.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,23(8). |
MLA | Guo SJ,et al."Decametric Solar Radio Spectrometer Based on 4-element Beamforming Array and Initial Observational Results".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 23.8(2023). |
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