Realization of Low Cross-Polarization Level for GF-3 SAR Antenna
In the polarimetric synthetic aperture radar (PolSAR) system, crosstalk error is the key parameter for polarimetric imaging. The source of crosstalk is mostly from the cross-polarization level of the SAR antenna subsystem. To meet the requirements of PolSAR observing modes, a low cross-polarization...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2022/9260843 |
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| author | Jian Mi Hongbing Sun Guodong Song Ying Xing Xuhao Zhao |
| author_facet | Jian Mi Hongbing Sun Guodong Song Ying Xing Xuhao Zhao |
| author_sort | Jian Mi |
| collection | DOAJ |
| description | In the polarimetric synthetic aperture radar (PolSAR) system, crosstalk error is the key parameter for polarimetric imaging. The source of crosstalk is mostly from the cross-polarization level of the SAR antenna subsystem. To meet the requirements of PolSAR observing modes, a low cross-polarization level under −35 dB is realized for the SAR antenna of the GF-3 satellite. In this paper, we will describe the principles and methods for implementation of low cross-polarization level. The two polarized RF chains are totally independent to ensure high isolation, and a dual-polarized waveguide slot antenna subarray is designed with a low cross-polarization level. Besides, the low taper efficiency of the cross-polarization pattern contributes to reduce the cross-polarization, showing the advantage of the phased array antenna in the PolSAR system. The paper also displays the measured results of cross-polarization for the GF-3 SAR antenna. The study gains a better understanding of the cross-polarization pattern for phased array antenna. The methods utilized here can be extended to other polarimetric SAR systems. |
| format | Article |
| id | doaj-art-585d2e728ce745d2af3bf0903258ed05 |
| institution | Kabale University |
| issn | 1687-5877 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-585d2e728ce745d2af3bf0903258ed052025-02-03T01:19:58ZengWileyInternational Journal of Antennas and Propagation1687-58772022-01-01202210.1155/2022/9260843Realization of Low Cross-Polarization Level for GF-3 SAR AntennaJian Mi0Hongbing Sun1Guodong Song2Ying Xing3Xuhao Zhao4Nanjing Research Institute of Electronics TechnologyNanjing Research Institute of Electronics TechnologyNanjing Research Institute of Electronics TechnologyNanjing Research Institute of Electronics TechnologyNanjing Research Institute of Electronics TechnologyIn the polarimetric synthetic aperture radar (PolSAR) system, crosstalk error is the key parameter for polarimetric imaging. The source of crosstalk is mostly from the cross-polarization level of the SAR antenna subsystem. To meet the requirements of PolSAR observing modes, a low cross-polarization level under −35 dB is realized for the SAR antenna of the GF-3 satellite. In this paper, we will describe the principles and methods for implementation of low cross-polarization level. The two polarized RF chains are totally independent to ensure high isolation, and a dual-polarized waveguide slot antenna subarray is designed with a low cross-polarization level. Besides, the low taper efficiency of the cross-polarization pattern contributes to reduce the cross-polarization, showing the advantage of the phased array antenna in the PolSAR system. The paper also displays the measured results of cross-polarization for the GF-3 SAR antenna. The study gains a better understanding of the cross-polarization pattern for phased array antenna. The methods utilized here can be extended to other polarimetric SAR systems.http://dx.doi.org/10.1155/2022/9260843 |
| spellingShingle | Jian Mi Hongbing Sun Guodong Song Ying Xing Xuhao Zhao Realization of Low Cross-Polarization Level for GF-3 SAR Antenna International Journal of Antennas and Propagation |
| title | Realization of Low Cross-Polarization Level for GF-3 SAR Antenna |
| title_full | Realization of Low Cross-Polarization Level for GF-3 SAR Antenna |
| title_fullStr | Realization of Low Cross-Polarization Level for GF-3 SAR Antenna |
| title_full_unstemmed | Realization of Low Cross-Polarization Level for GF-3 SAR Antenna |
| title_short | Realization of Low Cross-Polarization Level for GF-3 SAR Antenna |
| title_sort | realization of low cross polarization level for gf 3 sar antenna |
| url | http://dx.doi.org/10.1155/2022/9260843 |
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