Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transform
Abstract In ISAR imaging, echo signals of complex manoeuvring targets have to be modelled as multi‐component cubic phase signals (m‐CPS). In this condition, the Doppler diffusion will seriously affect the quality of ISAR imaging. Herein, a complex manoeuvring target imaging method based on local pol...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-06-01
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| Series: | IET Radar, Sonar & Navigation |
| Online Access: | https://doi.org/10.1049/rsn2.12079 |
| _version_ | 1811273473395261440 |
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| author | Fengkai Liu Cunqian Feng Darong Huang Xinrong Guo |
| author_facet | Fengkai Liu Cunqian Feng Darong Huang Xinrong Guo |
| author_sort | Fengkai Liu |
| collection | DOAJ |
| description | Abstract In ISAR imaging, echo signals of complex manoeuvring targets have to be modelled as multi‐component cubic phase signals (m‐CPS). In this condition, the Doppler diffusion will seriously affect the quality of ISAR imaging. Herein, a complex manoeuvring target imaging method based on local polynomial transform‐fast chirp Fourier transform (LPT‐FCFT) is proposed. In this method, the instantaneous frequency and the quadratic chirp rate of the echo signal are estimated by local polynomial transformation, then the chirp rate and the amplitude are estimated by fast chirp Fourier transform, and finally the high‐resolution ISAR image of the complex manoeuvring target is obtained by CLEAN technology. Compared with the traditional method, the proposed method has the advantages of less computational complexity, clearer imaging results and better anti‐noise performance. Simulation results indicate the effectiveness and superiority of the proposed method. |
| first_indexed | 2024-04-12T22:59:45Z |
| format | Article |
| id | doaj.art-1abeef7ee7d64d5e9ba2a29f5a1c7095 |
| institution | Directory Open Access Journal |
| issn | 1751-8784 1751-8792 |
| language | English |
| last_indexed | 2024-04-12T22:59:45Z |
| publishDate | 2021-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Radar, Sonar & Navigation |
| spelling | doaj.art-1abeef7ee7d64d5e9ba2a29f5a1c70952022-12-22T03:13:04ZengWileyIET Radar, Sonar & Navigation1751-87841751-87922021-06-0115666667610.1049/rsn2.12079Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transformFengkai Liu0Cunqian Feng1Darong Huang2Xinrong Guo3Air and Missile Defense College Air Force Engineering University Xi'an ChinaAir and Missile Defense College Air Force Engineering University Xi'an ChinaAir and Missile Defense College Air Force Engineering University Xi'an ChinaScience College Armed Police Engineering University Xian ChinaAbstract In ISAR imaging, echo signals of complex manoeuvring targets have to be modelled as multi‐component cubic phase signals (m‐CPS). In this condition, the Doppler diffusion will seriously affect the quality of ISAR imaging. Herein, a complex manoeuvring target imaging method based on local polynomial transform‐fast chirp Fourier transform (LPT‐FCFT) is proposed. In this method, the instantaneous frequency and the quadratic chirp rate of the echo signal are estimated by local polynomial transformation, then the chirp rate and the amplitude are estimated by fast chirp Fourier transform, and finally the high‐resolution ISAR image of the complex manoeuvring target is obtained by CLEAN technology. Compared with the traditional method, the proposed method has the advantages of less computational complexity, clearer imaging results and better anti‐noise performance. Simulation results indicate the effectiveness and superiority of the proposed method.https://doi.org/10.1049/rsn2.12079 |
| spellingShingle | Fengkai Liu Cunqian Feng Darong Huang Xinrong Guo Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transform IET Radar, Sonar & Navigation |
| title | Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transform |
| title_full | Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transform |
| title_fullStr | Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transform |
| title_full_unstemmed | Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transform |
| title_short | Fast ISAR imaging method for complex manoeuvring target based on local polynomial transform‐fast chirp Fourier transform |
| title_sort | fast isar imaging method for complex manoeuvring target based on local polynomial transform fast chirp fourier transform |
| url | https://doi.org/10.1049/rsn2.12079 |
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