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Detection and mitigation of RFI in SBRS observation data
Qiang, Zhen-Ping1,2; Cheng, Jun2; Shang, Zhen-Hong3; Ji KF(季凯帆)4; Dai, Fei1; Liu H(刘辉)4
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2021-10
Volume21Issue:8
DOI10.1088/1674-4527/21/8/195
Contribution Rank第4完成单位
Indexed BySCI
Keywordspectrographs: SBRS techniques: image processing and spectroscopic Sun : radio radiation
Abstract

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.

Funding ProjectOpen 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]
Funding OrganizationOpen 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]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 计算机科学技术 ; 计算机应用
MOST Discipline Catalogue理学 ; 理学::天文学 ; 工学 ; 工学::计算机科学与技术(可授工学、理学学位)
SubtypeArticle
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS IDWOS:000711653400001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordPULSATING STRUCTURE ; SOLAR ; FLARE
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24642
Collection天文技术实验室
Corresponding AuthorLiu H(刘辉)
Affiliation1.College of Big Data and Intelligent Engineering, Southwest Forestry University, Kunming 650224, China;
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100101, China;
3.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650504, China;
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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