Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm
For parallel bistatic forward-looking synthetic aperture radar (SAR) imaging, the instantaneous slant range is a double-square-root expression due to the separate transmitter-receiver system form. The hyperbolic approximation provides a feasible solution to convert the dual square-root expression in...
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MDPI AG
2019-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/17/3792 |
| _version_ | 1811304944387489792 |
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| author | Chenchen Wang Weimin Su Hong Gu Jianchao Yang |
| author_facet | Chenchen Wang Weimin Su Hong Gu Jianchao Yang |
| author_sort | Chenchen Wang |
| collection | DOAJ |
| description | For parallel bistatic forward-looking synthetic aperture radar (SAR) imaging, the instantaneous slant range is a double-square-root expression due to the separate transmitter-receiver system form. The hyperbolic approximation provides a feasible solution to convert the dual square-root expression into a single-square-root expression. However, some high-order terms of the range Taylor expansion have not been considered during the slant range approximation procedure in existing methods, and therefore, inaccurate phase compensation occurs. To obtain a more accurate compensation result, an improved hyperbolic approximation range form with high-order terms is proposed. Then, a modified omega-K algorithm based on the new slant range form is adopted for parallel bistatic forward-looking SAR imaging. Several simulation results validate the effectiveness of the proposed imaging algorithm. |
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| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T08:16:33Z |
| publishDate | 2019-09-01 |
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| spelling | doaj.art-1c824e44234f42118204ebe0368363c32022-12-22T02:54:46ZengMDPI AGSensors1424-82202019-09-011917379210.3390/s19173792s19173792Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K AlgorithmChenchen Wang0Weimin Su1Hong Gu2Jianchao Yang3School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaFor parallel bistatic forward-looking synthetic aperture radar (SAR) imaging, the instantaneous slant range is a double-square-root expression due to the separate transmitter-receiver system form. The hyperbolic approximation provides a feasible solution to convert the dual square-root expression into a single-square-root expression. However, some high-order terms of the range Taylor expansion have not been considered during the slant range approximation procedure in existing methods, and therefore, inaccurate phase compensation occurs. To obtain a more accurate compensation result, an improved hyperbolic approximation range form with high-order terms is proposed. Then, a modified omega-K algorithm based on the new slant range form is adopted for parallel bistatic forward-looking SAR imaging. Several simulation results validate the effectiveness of the proposed imaging algorithm.https://www.mdpi.com/1424-8220/19/17/3792bistatic synthetic aperture radar (SAR)hyperbolic approximationphase compensationmodified omega-K |
| spellingShingle | Chenchen Wang Weimin Su Hong Gu Jianchao Yang Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm Sensors bistatic synthetic aperture radar (SAR) hyperbolic approximation phase compensation modified omega-K |
| title | Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm |
| title_full | Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm |
| title_fullStr | Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm |
| title_full_unstemmed | Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm |
| title_short | Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm |
| title_sort | focusing bistatic forward looking synthetic aperture radar based on an improved hyperbolic range model and a modified omega k algorithm |
| topic | bistatic synthetic aperture radar (SAR) hyperbolic approximation phase compensation modified omega-K |
| url | https://www.mdpi.com/1424-8220/19/17/3792 |
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