Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing
Abstract In this paper, a broadband multi‐carrier linear frequency modulation (LFM) signal reception method with subcarrier frequency offset deramp processing is proposed and investigated. The proposed frequency offset deramp processing is implemented by mixing the multi‐carrier LFM radar echo with...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-11-01
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| Series: | IET Radar, Sonar & Navigation |
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| Online Access: | https://doi.org/10.1049/rsn2.12646 |
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| author | Jinhu Li Fangzheng Zhang Jiayuan Kong Shilong Pan Yuhui He |
| author_facet | Jinhu Li Fangzheng Zhang Jiayuan Kong Shilong Pan Yuhui He |
| author_sort | Jinhu Li |
| collection | DOAJ |
| description | Abstract In this paper, a broadband multi‐carrier linear frequency modulation (LFM) signal reception method with subcarrier frequency offset deramp processing is proposed and investigated. The proposed frequency offset deramp processing is implemented by mixing the multi‐carrier LFM radar echo with a multi‐carrier LFM reference that has a different subcarrier frequency interval. With this design, the sampling rate of the radar receiver is remarkably reduced and crosstalk‐free separation of different subcarrier signals is easily conducted in the frequency domain. To fuse the multiple subcarriers and fill the frequency gaps, a sparse reconstruction method is employed to obtain the broadband response, which is essential for achieving high range resolution detection. The effectiveness of the proposed method is validated through an experiment in which the reception of an 8‐carrier LFM signal is conducted and a total bandwidth of 6 GHz after multi‐carrier fusion is demonstrated. An inverse synthetic aperture radar imaging experiment is also conducted with the results verifying the good potential of the proposed method in practical applications. |
| format | Article |
| id | doaj-art-6b5cef0d00f4492d958a35ccddb68507 |
| institution | DOAJ |
| issn | 1751-8784 1751-8792 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Radar, Sonar & Navigation |
| spelling | doaj-art-6b5cef0d00f4492d958a35ccddb685072025-08-20T02:48:42ZengWileyIET Radar, Sonar & Navigation1751-87841751-87922024-11-0118112325233210.1049/rsn2.12646Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processingJinhu Li0Fangzheng Zhang1Jiayuan Kong2Shilong Pan3Yuhui He4College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics Nanjing ChinaCollege of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics Nanjing ChinaCollege of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics Nanjing ChinaCollege of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics Nanjing ChinaCollege of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics Nanjing ChinaAbstract In this paper, a broadband multi‐carrier linear frequency modulation (LFM) signal reception method with subcarrier frequency offset deramp processing is proposed and investigated. The proposed frequency offset deramp processing is implemented by mixing the multi‐carrier LFM radar echo with a multi‐carrier LFM reference that has a different subcarrier frequency interval. With this design, the sampling rate of the radar receiver is remarkably reduced and crosstalk‐free separation of different subcarrier signals is easily conducted in the frequency domain. To fuse the multiple subcarriers and fill the frequency gaps, a sparse reconstruction method is employed to obtain the broadband response, which is essential for achieving high range resolution detection. The effectiveness of the proposed method is validated through an experiment in which the reception of an 8‐carrier LFM signal is conducted and a total bandwidth of 6 GHz after multi‐carrier fusion is demonstrated. An inverse synthetic aperture radar imaging experiment is also conducted with the results verifying the good potential of the proposed method in practical applications.https://doi.org/10.1049/rsn2.12646radar signal processingsignal synthesisultra wideband radar |
| spellingShingle | Jinhu Li Fangzheng Zhang Jiayuan Kong Shilong Pan Yuhui He Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing IET Radar, Sonar & Navigation radar signal processing signal synthesis ultra wideband radar |
| title | Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing |
| title_full | Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing |
| title_fullStr | Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing |
| title_full_unstemmed | Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing |
| title_short | Broadband multi‐carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing |
| title_sort | broadband multi carrier linear frequency modulation signal reception with subcarrier frequency offset deramp processing |
| topic | radar signal processing signal synthesis ultra wideband radar |
| url | https://doi.org/10.1049/rsn2.12646 |
| work_keys_str_mv | AT jinhuli broadbandmulticarrierlinearfrequencymodulationsignalreceptionwithsubcarrierfrequencyoffsetderampprocessing AT fangzhengzhang broadbandmulticarrierlinearfrequencymodulationsignalreceptionwithsubcarrierfrequencyoffsetderampprocessing AT jiayuankong broadbandmulticarrierlinearfrequencymodulationsignalreceptionwithsubcarrierfrequencyoffsetderampprocessing AT shilongpan broadbandmulticarrierlinearfrequencymodulationsignalreceptionwithsubcarrierfrequencyoffsetderampprocessing AT yuhuihe broadbandmulticarrierlinearfrequencymodulationsignalreceptionwithsubcarrierfrequencyoffsetderampprocessing |