Research on Multimodal RFI Cancellation in QTT-PAF Beamforming Based on the PCA Algorithm
文献类型：期刊论文
| 作者 | Qi, Yi-Fan2,3; Pei, Xin2; Wu, Peng1,2; Zhang, Ke3; Lian, Pei-Yuan3; Yan, Yue-Fei3; Wang, Cong-Si2,3 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2026-04-29 |
| 卷号 | 26期号:4页码:11 |
| 关键词 | Astronomical Instrumentation, Methods and Techniques instrumentation: high angular resolution methods: numerical techniques: radar astronomy |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/ae37ee |
| 通讯作者 | Qi, Yi-Fan(530846312@qq.com) ; Pei, Xin(peixin@xao.ac.cn) |
| 英文摘要 | This study tackles the multimodal radio frequency interference (RFI) challenges encountered by the Qitai Radio Telescope by developing a comprehensive numerical model. The model integrates four critical interference types: coupling effects, fixed-position interference, moving-position interference, and white noise. These interferences exhibit dynamic variations in both temporal and spatial domains. Innovatively, this work introduces the principal component analysis (PCA) algorithm to beamforming for the first time, conducting a systematic performance comparison with the conventional subspace projection (SP) algorithm. The interference cancellation capability of PCA is rigorously evaluated under two scenarios: (i) complete spatial separation between signal of interest (SOI) and RFI, and (ii) partial or full spatial overlap between SOI and RFI distributions. Results demonstrate that PCA achieves a 30 dB S/N improvement over SP while maintaining the same robust coupling effects as SP. Crucially, PCA better handles overlapping SOI-RFI scenarios, in which traditional methods exhibit significant performance degradation. This research provides a foundational framework for future beamformer design, offering significant potential to advance RFI mitigation technologies and enhance the observational robustness of radio telescopes in complex electromagnetic environments. |
| WOS关键词 | REFLECTOR ANTENNA ; INTERFERENCE |
| 资助项目 | Tianshan Talent Training Program[2024TSYCCX0071] ; National Key R&D Program of China[2021YFC2203502] ; National Key R&D Program of China[2021YFC2203600] ; National Natural Science Foundation of China (NSFC)[12073066] ; National Natural Science Foundation of China (NSFC)[52275268] ; Project about Building up Scientists + Engineers of Shaanxi Qinchuangyuan Platform[2022KXJ-030] ; Scientific Instrument Developing Project of the CAS[PTYQ2022YZZD01] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001696113900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Tianshan Talent Training Program ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Project about Building up Scientists + Engineers of Shaanxi Qinchuangyuan Platform ; Scientific Instrument Developing Project of the CAS |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8584]  |
| 专题 | 射电天文研究室_数字技术实验室 |
| 通讯作者 | Qi, Yi-Fan; Pei, Xin |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Xidian Univ, Guangzhou Inst Technol, Guangzhou 510555, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Yi-Fan,Pei, Xin,Wu, Peng,et al. Research on Multimodal RFI Cancellation in QTT-PAF Beamforming Based on the PCA Algorithm[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2026,26(4):11. |
| APA | Qi, Yi-Fan.,Pei, Xin.,Wu, Peng.,Zhang, Ke.,Lian, Pei-Yuan.,...&Wang, Cong-Si.(2026).Research on Multimodal RFI Cancellation in QTT-PAF Beamforming Based on the PCA Algorithm.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,26(4),11. |
| MLA | Qi, Yi-Fan,et al."Research on Multimodal RFI Cancellation in QTT-PAF Beamforming Based on the PCA Algorithm".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 26.4(2026):11. |
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来源：新疆天文台
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