中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A FPGA-based Fast Converging Digital Adaptive Filter for Real-time RFI Mitigation on Ground Based Radio Telescopes

文献类型:期刊论文

作者Finger, R.1,2; Curotto, F.1,2; Fuentes, R.1,2; Duan, R.3; Bronfman, L.1; Li, D.3,4
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期2018-02-01
卷号130期号:984页码:7
ISSN号0004-6280
关键词instrumentation: spectrographs techniques: image processing techniques: miscellaneous
DOI10.1088/1538-3873/aa972f
通讯作者Finger, R.()
英文摘要Radio Frequency Interference (RFI) is a growing concern in the radio astronomy community. Single-dish telescopes are particularly susceptible to RFI. Several methods have been developed to cope with RF-polluted environments, based on flagging, excision, and real-time blanking, among others. All these methods produce some degree of data loss or require assumptions to be made on the astronomical signal. We report the development of a real-time, digital adaptive filter implemented on a Field Programmable Gate Array (FPGA) capable of processing 4096 spectral channels in a 1 GHz of instantaneous bandwidth. The filter is able to cancel a broad range of interference signals and quickly adapt to changes on the RFI source, minimizing the data loss without any assumption on the astronomical or interfering signal properties. The speed of convergence (for a decrease to a 1%) was measured to be 208.1 mu s for a broadband noise-like RFI signal and 125.5 mu s for a multiple-carrier RFI signal recorded at the FAST radio telescope.
WOS关键词INTERFERENCE EXCISION ; ASTRONOMY
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000418942400002
源URL[http://libir.pmo.ac.cn/handle/332002/22133]  
专题中国科学院紫金山天文台
通讯作者Finger, R.
作者单位1.Univ Chile, Dept Astron, Santiago, Chile
2.Univ Chile, Dept Elect Engn, Santiago, Chile
3.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Finger, R.,Curotto, F.,Fuentes, R.,et al. A FPGA-based Fast Converging Digital Adaptive Filter for Real-time RFI Mitigation on Ground Based Radio Telescopes[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2018,130(984):7.
APA Finger, R.,Curotto, F.,Fuentes, R.,Duan, R.,Bronfman, L.,&Li, D..(2018).A FPGA-based Fast Converging Digital Adaptive Filter for Real-time RFI Mitigation on Ground Based Radio Telescopes.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,130(984),7.
MLA Finger, R.,et al."A FPGA-based Fast Converging Digital Adaptive Filter for Real-time RFI Mitigation on Ground Based Radio Telescopes".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 130.984(2018):7.

入库方式: OAI收割

来源:紫金山天文台

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