Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions
Synthetic aperture radar (SAR) systems are highly sensitive to interference, making interference suppression a critical concern. While significant research has been conducted on SAR interference suppression using parametric, nonparametric, semiparametric methods, and machine learning, these studies...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
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| Online Access: | https://ieeexplore.ieee.org/document/10938179/ |
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| _version_ | 1849729686746169344 |
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| author | Lunhao Duan Xingyu Lu Jianchao Yang Huizhang Yang Shiyuan Zhang Guanqi Tong Ke Tan Zheng Dai Hong Gu |
| author_facet | Lunhao Duan Xingyu Lu Jianchao Yang Huizhang Yang Shiyuan Zhang Guanqi Tong Ke Tan Zheng Dai Hong Gu |
| author_sort | Lunhao Duan |
| collection | DOAJ |
| description | Synthetic aperture radar (SAR) systems are highly sensitive to interference, making interference suppression a critical concern. While significant research has been conducted on SAR interference suppression using parametric, nonparametric, semiparametric methods, and machine learning, these studies often neglect the impact of high-power interference, which can saturate SAR receivers due to their limited dynamic range. This saturation can lead to the model mismatch and performance degradation of many previously studied suppression methods. In this article, we provide a detailed analysis of saturated interference in SAR systems. We develop time-domain saturation signal models for different types of interference, and analyze the frequency domain spurious characteristics of saturated interference. Based on this analysis, we propose novel interference suppression method adapted for saturated narrowband and wideband interference. We validate our methods using semiactual data from Radarsat-1, demonstrating their effectiveness in suppressing both narrowband and wideband saturated interference. Besides, we also conducted analysis and verification using the real saturated interference data of Gaofen-3. The results confirm the proposed methods' capability to enhance SAR performance under saturation conditions. |
| format | Article |
| id | doaj-art-58888db1cb7543c29e419daee7cf8f39 |
| institution | DOAJ |
| issn | 1939-1404 2151-1535 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| spelling | doaj-art-58888db1cb7543c29e419daee7cf8f392025-08-20T03:09:08ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing1939-14042151-15352025-01-01189244926110.1109/JSTARS.2025.355419910938179Saturated Interference in SAR: Theoretical Analysis and Suppression SolutionsLunhao Duan0https://orcid.org/0009-0004-3411-8274Xingyu Lu1https://orcid.org/0000-0002-8540-8552Jianchao Yang2Huizhang Yang3https://orcid.org/0000-0001-9725-088XShiyuan Zhang4https://orcid.org/0000-0002-5076-029XGuanqi Tong5Ke Tan6Zheng Dai7https://orcid.org/0000-0001-6415-1690Hong Gu8Department of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSynthetic aperture radar (SAR) systems are highly sensitive to interference, making interference suppression a critical concern. While significant research has been conducted on SAR interference suppression using parametric, nonparametric, semiparametric methods, and machine learning, these studies often neglect the impact of high-power interference, which can saturate SAR receivers due to their limited dynamic range. This saturation can lead to the model mismatch and performance degradation of many previously studied suppression methods. In this article, we provide a detailed analysis of saturated interference in SAR systems. We develop time-domain saturation signal models for different types of interference, and analyze the frequency domain spurious characteristics of saturated interference. Based on this analysis, we propose novel interference suppression method adapted for saturated narrowband and wideband interference. We validate our methods using semiactual data from Radarsat-1, demonstrating their effectiveness in suppressing both narrowband and wideband saturated interference. Besides, we also conducted analysis and verification using the real saturated interference data of Gaofen-3. The results confirm the proposed methods' capability to enhance SAR performance under saturation conditions.https://ieeexplore.ieee.org/document/10938179/Analog-to-digital converter (ADC)antisaturationinterference suppressionnotch filtersreceiversaturated interference |
| spellingShingle | Lunhao Duan Xingyu Lu Jianchao Yang Huizhang Yang Shiyuan Zhang Guanqi Tong Ke Tan Zheng Dai Hong Gu Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Analog-to-digital converter (ADC) antisaturation interference suppression notch filters receiver saturated interference |
| title | Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions |
| title_full | Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions |
| title_fullStr | Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions |
| title_full_unstemmed | Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions |
| title_short | Saturated Interference in SAR: Theoretical Analysis and Suppression Solutions |
| title_sort | saturated interference in sar theoretical analysis and suppression solutions |
| topic | Analog-to-digital converter (ADC) antisaturation interference suppression notch filters receiver saturated interference |
| url | https://ieeexplore.ieee.org/document/10938179/ |
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