Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor Experiments
Recent advancement of satellite synthetic aperture radar (SAR) techniques require more sophisticated system configurations such as the use of bistatic antennas or multi-frequencies. A ground-based experiment is a cost-effective and efficient way to evaluate those new configurations especially in the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/1/63 |
| _version_ | 1827699217726963712 |
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| author | Hoonyol Lee Jihyun Moon |
| author_facet | Hoonyol Lee Jihyun Moon |
| author_sort | Hoonyol Lee |
| collection | DOAJ |
| description | Recent advancement of satellite synthetic aperture radar (SAR) techniques require more sophisticated system configurations such as the use of bistatic antennas or multi-frequencies. A ground-based experiment is a cost-effective and efficient way to evaluate those new configurations especially in the early stage of the system development. In this paper, a ground-based synthetic aperture radar (GB-SAR) system was constructed and operated in a bistatic mode at Ku-band where a receiving antenna (Rx) follows a transmitting antenna (Tx) separated by a baseline <i>B</i>. A new bistatic GB-SAR focusing algorithm was developed by modifying a conventional range-Doppler algorithm (RDA), and its performance has been evaluated by comparing the results with those from a back-projection algorithm (BPA). The results showed good performance of RDA at far range approaching nominal resolutions of 9.4 cm in range and 4.5 cm in azimuth, but limited quality at near range due to the approximation used in RDA. Signals from three trihedral corner reflectors (CR) reduced with increasing <i>B</i>, showing a typical bidirectional scattering behavior of CR. This GB-SAR system will be a testbed for new SAR imaging configurations with variations in antenna positions and target properties. |
| first_indexed | 2024-03-10T13:45:48Z |
| format | Article |
| id | doaj.art-b7dec88972ff4e8984356a750f344ef2 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T13:45:48Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-b7dec88972ff4e8984356a750f344ef22023-11-21T02:40:00ZengMDPI AGRemote Sensing2072-42922020-12-011316310.3390/rs13010063Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor ExperimentsHoonyol Lee0Jihyun Moon1Department of Geophysics, Kangwon National University, Chuncheon, Kangwon-do 24341, KoreaDepartment of Geophysics, Kangwon National University, Chuncheon, Kangwon-do 24341, KoreaRecent advancement of satellite synthetic aperture radar (SAR) techniques require more sophisticated system configurations such as the use of bistatic antennas or multi-frequencies. A ground-based experiment is a cost-effective and efficient way to evaluate those new configurations especially in the early stage of the system development. In this paper, a ground-based synthetic aperture radar (GB-SAR) system was constructed and operated in a bistatic mode at Ku-band where a receiving antenna (Rx) follows a transmitting antenna (Tx) separated by a baseline <i>B</i>. A new bistatic GB-SAR focusing algorithm was developed by modifying a conventional range-Doppler algorithm (RDA), and its performance has been evaluated by comparing the results with those from a back-projection algorithm (BPA). The results showed good performance of RDA at far range approaching nominal resolutions of 9.4 cm in range and 4.5 cm in azimuth, but limited quality at near range due to the approximation used in RDA. Signals from three trihedral corner reflectors (CR) reduced with increasing <i>B</i>, showing a typical bidirectional scattering behavior of CR. This GB-SAR system will be a testbed for new SAR imaging configurations with variations in antenna positions and target properties.https://www.mdpi.com/2072-4292/13/1/63bistaticGB-SARKu-bandback-projection algorithmrange-Doppler algorithm |
| spellingShingle | Hoonyol Lee Jihyun Moon Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor Experiments Remote Sensing bistatic GB-SAR Ku-band back-projection algorithm range-Doppler algorithm |
| title | Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor Experiments |
| title_full | Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor Experiments |
| title_fullStr | Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor Experiments |
| title_full_unstemmed | Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor Experiments |
| title_short | Analysis of a Bistatic Ground-Based Synthetic Aperture Radar System and Indoor Experiments |
| title_sort | analysis of a bistatic ground based synthetic aperture radar system and indoor experiments |
| topic | bistatic GB-SAR Ku-band back-projection algorithm range-Doppler algorithm |
| url | https://www.mdpi.com/2072-4292/13/1/63 |
| work_keys_str_mv | AT hoonyollee analysisofabistaticgroundbasedsyntheticapertureradarsystemandindoorexperiments AT jihyunmoon analysisofabistaticgroundbasedsyntheticapertureradarsystemandindoorexperiments |