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Advances in the QTT Digital Backend: Design, Implementation and Verification

文献类型：期刊论文

作者Pei, Xin3,4,5; Li, Jian2,3,4,5; Duan, Xuefeng3,4,5; Zhao, Liangtian1; Fan, Qiuxiang1; Zhao, Meiting1; Ma, Jun3,4,5; Chen, Maozheng3,4,5; Wang, Na4,5; Hao, Jie1
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期2025-09-01
卷号137期号:9页码:094505
ISSN号0004-6280
DOI10.1088/1538-3873/ae04a0
产权排序1
英文摘要The Xinjiang Qitai Radio Telescope (QTT) in China is equipped with a variety of receivers covering 270 MHz-116 GHz (initially 50 GHz), presenting unique signal acquisition challenges due to varying bandwidths, beams, and locations, along with extreme data rates. To address these challenges, we developed the Wanxiang digital backend employing Radio Frequency System-on-Chip (RFSoC) technology for RF-direct signal digitization and an elastic high-performance computing (HPC) cluster for multifunctional post-processing. The system supports multiple observation modes, including pulsars, transients, spectral lines, continuum, and very long baseline interferometry/baseband. High-performance shielded enclosures minimize electromagnetic radiation from digital devices in receiver cabins. A 100 Gb s-1 network enables massive data transfer to the HPC cluster for real-time processing, integrating radio frequency interference mitigation, raw voltage capture, and coordinated observation capabilities. The scalable architecture enables expansion via additional RFSoC and computing nodes. We present verification results including custom RFSoC development, electromagnetic compatibility design and test, software implementation, and successful pulsar observations, demonstrating the system's readiness for scientific operations. This integrated solution significantly enhances signal fidelity while optimizing resource utilization for QTT's advanced research capabilities.
资助项目Tianshan Talent Training Program ; National Key R&D Program of China[2021YFC2203502] ; Scientific Instrument Developing Project of the CAS[PTYQ2025YZ0012] ; Scientific Instrument Developing Project of the CAS[PTYQ2022YZZD01] ; [2024TSYCCX0071]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001583373100001
出版者IOP Publishing Ltd
资助机构Tianshan Talent Training Program ; National Key R&D Program of China ; Scientific Instrument Developing Project of the CAS
源URL[http://ir.xao.ac.cn/handle/45760611-7/8205]  
专题新疆天文台_110米口径全可动射电望远镜（SmART）_技术成果
通讯作者Pei, Xin; Li, Jian
作者单位1.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xinjiang Key Lab Microwave Technol, Urumqi 830011, Peoples R China
4.State Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China
5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Pei, Xin,Li, Jian,Duan, Xuefeng,et al. Advances in the QTT Digital Backend: Design, Implementation and Verification[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2025,137(9):094505.
APA Pei, Xin.,Li, Jian.,Duan, Xuefeng.,Zhao, Liangtian.,Fan, Qiuxiang.,...&Hao, Jie.(2025).Advances in the QTT Digital Backend: Design, Implementation and Verification.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,137(9),094505.
MLA Pei, Xin,et al."Advances in the QTT Digital Backend: Design, Implementation and Verification".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 137.9(2025):094505.

入库方式： OAI收割

来源：新疆天文台

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