An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT
For the planning of the QiTai radio Telescope ultrawide bandwidth low-frequency pulsar receiving system, we designed and implemented a Field-Programmable Gate Array (FPGA)+CPU/GPU hybrid architecture digital backend system based on the Polyphase FilterBank (PFB) channeling algorithm. We used the FPG...
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| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/ad7fe0 |
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| author | Hai-long Zhang Ya-zhou Zhang Shao-cong Guo Xu Du Na Wang Jie Wang Xin-chen Ye Han Wu Jian Li Xin Pei Qiao Meng |
| author_facet | Hai-long Zhang Ya-zhou Zhang Shao-cong Guo Xu Du Na Wang Jie Wang Xin-chen Ye Han Wu Jian Li Xin Pei Qiao Meng |
| author_sort | Hai-long Zhang |
| collection | DOAJ |
| description | For the planning of the QiTai radio Telescope ultrawide bandwidth low-frequency pulsar receiving system, we designed and implemented a Field-Programmable Gate Array (FPGA)+CPU/GPU hybrid architecture digital backend system based on the Polyphase FilterBank (PFB) channeling algorithm. We used the FPGA signal acquisition and processing platform to implement ultrawide bandwidth signal sampling and designed the PFB algorithm to realize the digital channelization of multiple analog bandwidth signals. We also developed data encapsulation and multichannel parallel distribution firmware algorithms and realized the real-time parallel transmission of high-speed astronomical data streams based on the VLBI Data Interchange Format. We developed the Ultra Wide bandwidth Low-frequency pulsar data process PIPEline, which realized the real-time processing and data packaging of massive pulsar signals. Using the L -band (964–1732 MHz bandwidth) receiving system of the Nanshan 26 m radio telescope, we conducted a systematic test on the designed digital backend system and obtained high-quality observation data. By using the professional pulsar data processing software DSPSR to process the observation data, we obtained high signal-to-noise ratio pulse profiles. |
| format | Article |
| id | doaj-art-eb31df08bf2b42008e35c8cfa289829c |
| institution | OA Journals |
| issn | 1538-3881 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj-art-eb31df08bf2b42008e35c8cfa289829c2025-08-20T02:11:33ZengIOP PublishingThe Astronomical Journal1538-38812024-01-01168522210.3847/1538-3881/ad7fe0An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTTHai-long Zhang0https://orcid.org/0000-0002-8951-7094Ya-zhou Zhang1https://orcid.org/0000-0001-6046-2950Shao-cong Guo2Xu Du3https://orcid.org/0000-0001-6448-0822Na Wang4https://orcid.org/0000-0002-9786-8548Jie Wang5https://orcid.org/0000-0003-0380-6395Xin-chen Ye6https://orcid.org/0000-0003-2132-0989Han Wu7Jian Li8Xin Pei9Qiao Meng10Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cn; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China; Key Laboratory of Radio Astronomy , Chinese Academy of Sciences, Nanjing 210008, People's Republic of China; National Astronomical Data Center , Beijing 100101, People's Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cnSoutheast University , Nanjing 211189, People's Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cn; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cnXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cn; National Astronomical Data Center , Beijing 100101, People's Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cn; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China; National Astronomical Data Center , Beijing 100101, People's Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cn; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cn; University of Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi 830011, People's Republic of China ; zhanghailong@xao.ac.cnSoutheast University , Nanjing 211189, People's Republic of ChinaFor the planning of the QiTai radio Telescope ultrawide bandwidth low-frequency pulsar receiving system, we designed and implemented a Field-Programmable Gate Array (FPGA)+CPU/GPU hybrid architecture digital backend system based on the Polyphase FilterBank (PFB) channeling algorithm. We used the FPGA signal acquisition and processing platform to implement ultrawide bandwidth signal sampling and designed the PFB algorithm to realize the digital channelization of multiple analog bandwidth signals. We also developed data encapsulation and multichannel parallel distribution firmware algorithms and realized the real-time parallel transmission of high-speed astronomical data streams based on the VLBI Data Interchange Format. We developed the Ultra Wide bandwidth Low-frequency pulsar data process PIPEline, which realized the real-time processing and data packaging of massive pulsar signals. Using the L -band (964–1732 MHz bandwidth) receiving system of the Nanshan 26 m radio telescope, we conducted a systematic test on the designed digital backend system and obtained high-quality observation data. By using the professional pulsar data processing software DSPSR to process the observation data, we obtained high signal-to-noise ratio pulse profiles.https://doi.org/10.3847/1538-3881/ad7fe0Astronomy data analysis |
| spellingShingle | Hai-long Zhang Ya-zhou Zhang Shao-cong Guo Xu Du Na Wang Jie Wang Xin-chen Ye Han Wu Jian Li Xin Pei Qiao Meng An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT The Astronomical Journal Astronomy data analysis |
| title | An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT |
| title_full | An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT |
| title_fullStr | An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT |
| title_full_unstemmed | An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT |
| title_short | An Ultrawide Bandwidth Digital Backend System Based on PFB Algorithm for QTT |
| title_sort | ultrawide bandwidth digital backend system based on pfb algorithm for qtt |
| topic | Astronomy data analysis |
| url | https://doi.org/10.3847/1538-3881/ad7fe0 |
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