Detection and mitigation of RFI in SBRS observation data | |
Qiang, Zhen-Ping3,4; Cheng, Jun3; Shang, Zhen-Hong2; Ji KF(季凯帆)1; Dai, Fei4; Liu H(刘辉)1 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2021-10 | |
卷号 | 21期号:8 |
关键词 | spectrographs: SBRS techniques: image processing and spectroscopic Sun : radio radiation |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/21/8/195 |
产权排序 | 第4完成单位 |
文献子类 | Article |
英文摘要 | In view of the inconsistency of channel gains and a large amount of interference noise in Solar Broadband Radio Spectrometer (SBRS) observation data, they will seriously affect the analysis of SBRS data. In this paper, a method of Radio Frequency Interference (RFI) detection and mitigation for SBRS observation data is reported. Firstly, the SBRS observation data are preprocessed, a part of the observation data was selected to calculate the mean and variance to achieve the normalization of the entire observation data, which can avoid the influence of strong noise on the normalization result. Furthermore, we proposed an adaptive threshold RFI detection method based on fusion wavelet transform reconstruction and an RFI elimination method based on neighborhood weighted filling. It is worth mentioning that to detect RFI interference signals of different magnitudes, we adopted an iterative approach to the RFI detection and mitigation process. Through qualitative analysis of real observation data and quantitative analysis of simulated data, it is shown that the method proposed in this paper can effectively eliminate RFI in SBRS observation data, and improve the quality of observation data for further scientific analysis. |
学科主题 | 天文学 ; 太阳与太阳系 ; 计算机科学技术 ; 计算机应用 |
URL标识 | 查看原文 |
出版地 | 20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA |
资助项目 | Open Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA201909] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11773072] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11873027] ; Yunnan Fundamental Research Projects[202001AT070135] |
WOS关键词 | PULSATING STRUCTURE ; SOLAR ; FLARE |
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:000711653400001 |
资助机构 | Open Research Program of CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA201909] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11773072, 11873027] ; Yunnan Fundamental Research Projects[202001AT070135] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24642] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
通讯作者 | Liu H(刘辉) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650504, China; 3.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100101, China; 4.College of Big Data and Intelligent Engineering, Southwest Forestry University, Kunming 650224, China; |
推荐引用方式 GB/T 7714 | Qiang, Zhen-Ping,Cheng, Jun,Shang, Zhen-Hong,et al. Detection and mitigation of RFI in SBRS observation data[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(8). |
APA | Qiang, Zhen-Ping,Cheng, Jun,Shang, Zhen-Hong,Ji KF,Dai, Fei,&Liu H.(2021).Detection and mitigation of RFI in SBRS observation data.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(8). |
MLA | Qiang, Zhen-Ping,et al."Detection and mitigation of RFI in SBRS observation data".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.8(2021). |
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