A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist Sampling
In recent decades, the deception jamming approach based on digital radio frequency memory (DRFM) for inverse synthetic aperture radar (ISAR) has been a well-researched topic. Various types of jamming signals based on interrupted-sampling repeater jamming (ISRJ) can induce one-dimensional multiple hi...
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| Format: | Article |
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MDPI AG
2023-10-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/20/5015 |
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| author | Ying-Xi Liu Qun Zhang Shi-Chao Xiong Hao-Bo Wang Hang Yuan Ying Luo |
| author_facet | Ying-Xi Liu Qun Zhang Shi-Chao Xiong Hao-Bo Wang Hang Yuan Ying Luo |
| author_sort | Ying-Xi Liu |
| collection | DOAJ |
| description | In recent decades, the deception jamming approach based on digital radio frequency memory (DRFM) for inverse synthetic aperture radar (ISAR) has been a well-researched topic. Various types of jamming signals based on interrupted-sampling repeater jamming (ISRJ) can induce one-dimensional multiple high-resolution range profile (HRRP) false targets or two-dimensional realistic multiple ISAR false targets for deception. However, these existing methods generate false targets that are identical to the real target. The ISRJ false target also generates a main false target whose energy is much higher than other sub-false targets. Thus, it is easy to discover that the radar has suffered jamming. In order to generate better, more confusing jamming signals, this paper proposes a jamming method based on sub-Nyquist sampling jamming to induce realistic, multiple false targets on ISAR images. It improves a template multiplication modulated time-delay method to eliminate and add scatterers on the selected false target to change its ISAR shape. The frequency-shift parameters of the template jamming signal are analyzed and derived in detail for eliminating and adding scatterers at the specified location. Thus, multiple false targets with different ISAR shapes and similar energy are generated, which can create better deception effects. Meanwhile, this method can adjust the number of false targets and the location of changed-shape false targets. Furthermore, the resolution of the false target can adaptively change with the radar pulse width and the accumulated pulse number. The simulation results show that the proposed deception jamming strategy works. |
| first_indexed | 2024-03-10T20:56:13Z |
| format | Article |
| id | doaj.art-ff929e326056492b9e0899bd0a3d8994 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T20:56:13Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-ff929e326056492b9e0899bd0a3d89942023-11-19T17:59:38ZengMDPI AGRemote Sensing2072-42922023-10-011520501510.3390/rs15205015A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist SamplingYing-Xi Liu0Qun Zhang1Shi-Chao Xiong2Hao-Bo Wang3Hang Yuan4Ying Luo5The Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, ChinaThe Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, ChinaThe Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, ChinaThe Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, ChinaThe Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, ChinaThe Institute of Information and Navigation, Air Force Engineering University, Xi’an 710077, ChinaIn recent decades, the deception jamming approach based on digital radio frequency memory (DRFM) for inverse synthetic aperture radar (ISAR) has been a well-researched topic. Various types of jamming signals based on interrupted-sampling repeater jamming (ISRJ) can induce one-dimensional multiple high-resolution range profile (HRRP) false targets or two-dimensional realistic multiple ISAR false targets for deception. However, these existing methods generate false targets that are identical to the real target. The ISRJ false target also generates a main false target whose energy is much higher than other sub-false targets. Thus, it is easy to discover that the radar has suffered jamming. In order to generate better, more confusing jamming signals, this paper proposes a jamming method based on sub-Nyquist sampling jamming to induce realistic, multiple false targets on ISAR images. It improves a template multiplication modulated time-delay method to eliminate and add scatterers on the selected false target to change its ISAR shape. The frequency-shift parameters of the template jamming signal are analyzed and derived in detail for eliminating and adding scatterers at the specified location. Thus, multiple false targets with different ISAR shapes and similar energy are generated, which can create better deception effects. Meanwhile, this method can adjust the number of false targets and the location of changed-shape false targets. Furthermore, the resolution of the false target can adaptively change with the radar pulse width and the accumulated pulse number. The simulation results show that the proposed deception jamming strategy works.https://www.mdpi.com/2072-4292/15/20/5015inverse synthetic aperture radar (ISAR)deception jammingsub-Nyquist samplingtemplate |
| spellingShingle | Ying-Xi Liu Qun Zhang Shi-Chao Xiong Hao-Bo Wang Hang Yuan Ying Luo A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist Sampling Remote Sensing inverse synthetic aperture radar (ISAR) deception jamming sub-Nyquist sampling template |
| title | A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist Sampling |
| title_full | A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist Sampling |
| title_fullStr | A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist Sampling |
| title_full_unstemmed | A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist Sampling |
| title_short | A Multiple-False-Target ISAR Shape Deception Jamming Method Based on Improved Template Multiplication Modulated Time-Delay Algorithm and Sub-Nyquist Sampling |
| title_sort | multiple false target isar shape deception jamming method based on improved template multiplication modulated time delay algorithm and sub nyquist sampling |
| topic | inverse synthetic aperture radar (ISAR) deception jamming sub-Nyquist sampling template |
| url | https://www.mdpi.com/2072-4292/15/20/5015 |
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