TerraSAR-X Antenna Calibration and Monitoring Based on a Precise Antenna Model

被引：35
|
作者：
Bachmann, Markus [1 ]
Schwerdt, Marco [1 ]
Braeutigam, Benjamin [1 ]
机构：
[1] DLR, German Aerosp Ctr, Microwaves & Radar Inst, D-82234 Wessling, Germany
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2010年 / 48卷 / 02期
关键词：
Active antenna calibration; antenna modeling; TerraSAR-X calibration;
D O I：
10.1109/TGRS.2009.2033934
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The high flexibility and tight accuracy requirements of modern spaceborne synthetic aperture radar (SAR) systems require innovative technologies to calibrate and process SAR images. To perform accurate pattern correction during SAR processing, an antenna model can be used to derive the multitude of different antenna beams generated by active antenna steering. The application of such an antenna model could be successfully demonstrated for the TerraSAR-X mission, launched in 2007. The methodology and the results of the in-orbit verification with an achieved accuracy of better than +/-0.2 dB are reviewed in this paper in detail, showing its outstanding accuracy. Additionally, the results of the antenna pattern long-term monitoring are described, pointing out the high stability of the system.
引用
收藏
页码：690 / 701
页数：12
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