Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration
Passive corner reflectors and active transponders are often used as man-made reference targets in Synthetic Aperture Radar (SAR) radiometric calibration, With the emergence of new radar systems and the increasing demand for greater accuracy, wide-band and wide-beam radars challenge the hypothesis th...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
China Science Publishing & Media Ltd. (CSPM)
2015-06-01
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| Series: | Leida xuebao |
| Subjects: | |
| Online Access: | http://radars.ie.ac.cn/CN/html/20150304.htm |
| _version_ | 1827613293831782400 |
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| author | Hong Jun Lei Da-li Wang Yu Fei Chun-jiao |
| author_facet | Hong Jun Lei Da-li Wang Yu Fei Chun-jiao |
| author_sort | Hong Jun |
| collection | DOAJ |
| description | Passive corner reflectors and active transponders are often used as man-made reference targets in Synthetic Aperture Radar (SAR) radiometric calibration, With the emergence of new radar systems and the increasing demand for greater accuracy, wide-band and wide-beam radars challenge the hypothesis that the Radar Cross Section (RCS) of reference targets is constant. In this study, the FEKO electromagnetic simulation software is used to obtain the change curve of the target RCS as a function of frequency and aspect angle while incorporating high-resolution point-target SAR simulation, and quantitatively analyzing the effect of the modulation effect on SAR images. The simulation results suggest that the abovementioned factors affect the SAR calibration by more than 0.2 dB within a fractional bandwidth greater than 10% or azimuth beam width of more than 20°, which must be corrected in the data processing. |
| first_indexed | 2024-03-09T08:37:40Z |
| format | Article |
| id | doaj.art-327547c86fac4529b50671414e587d7d |
| institution | Directory Open Access Journal |
| issn | 2095-283X 2095-283X |
| language | English |
| last_indexed | 2024-03-09T08:37:40Z |
| publishDate | 2015-06-01 |
| publisher | China Science Publishing & Media Ltd. (CSPM) |
| record_format | Article |
| series | Leida xuebao |
| spelling | doaj.art-327547c86fac4529b50671414e587d7d2023-12-02T17:48:35ZengChina Science Publishing & Media Ltd. (CSPM)Leida xuebao2095-283X2095-283X2015-06-014327628610.12000/JR15015Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric CalibrationHong Jun0Lei Da-li1Wang Yu2Fei Chun-jiao3National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of SciencesNational Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of SciencesNational Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of SciencesUniversity of Chinese Academy of SciencesPassive corner reflectors and active transponders are often used as man-made reference targets in Synthetic Aperture Radar (SAR) radiometric calibration, With the emergence of new radar systems and the increasing demand for greater accuracy, wide-band and wide-beam radars challenge the hypothesis that the Radar Cross Section (RCS) of reference targets is constant. In this study, the FEKO electromagnetic simulation software is used to obtain the change curve of the target RCS as a function of frequency and aspect angle while incorporating high-resolution point-target SAR simulation, and quantitatively analyzing the effect of the modulation effect on SAR images. The simulation results suggest that the abovementioned factors affect the SAR calibration by more than 0.2 dB within a fractional bandwidth greater than 10% or azimuth beam width of more than 20°, which must be corrected in the data processing.http://radars.ie.ac.cn/CN/html/20150304.htmSAR calibrationRadar Cross Section (RCS)Reference targetWide-band and wide-beamFEKO |
| spellingShingle | Hong Jun Lei Da-li Wang Yu Fei Chun-jiao Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration Leida xuebao SAR calibration Radar Cross Section (RCS) Reference target Wide-band and wide-beam FEKO |
| title | Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration |
| title_full | Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration |
| title_fullStr | Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration |
| title_full_unstemmed | Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration |
| title_short | Wide Band and Wide Azimuth Beam Effect on High-resolution Synthetic Aperture Radar Radiometric Calibration |
| title_sort | wide band and wide azimuth beam effect on high resolution synthetic aperture radar radiometric calibration |
| topic | SAR calibration Radar Cross Section (RCS) Reference target Wide-band and wide-beam FEKO |
| url | http://radars.ie.ac.cn/CN/html/20150304.htm |
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