TerraSAR-X Payload Data Processing: Results from Commissioning and Early Operational Phase
TerraSAR-X Payload Data Processing: Results from Commissioning and Early Operational Phase
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DOI：
10.1109/igarss.2008.4778964
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发表时间：
2008-06
期刊：
影响因子：
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通讯作者：
H. Breit;B. Schättler;T. Fritz;U. Balss;H. Damerow;Egbert Schwarz
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文献类型：
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作者：
H. Breit;B. Schättler;T. Fritz;U. Balss;H. Damerow;Egbert Schwarz
TerraSAR-X是德国第一颗国家雷达卫星，于2007年6月发射。它携带一个X波段高分辨率合成孔径雷达仪器，具有Stripmap，ScanSAR，特别是在各种不同偏振模式下的聚束成像。该使命于2007年12月完成了其调试阶段，2008年1月开始向科学界和商业界用户提供合成孔径雷达产品。TerraSAR-X地面上的一个中心部分是有效载荷地面部分PGS。从使命一开始，PGS就名义上运行。2007年已经采集和处理了大约1万个数据，不仅用于合成孔径雷达的核查和校准，而且也用于地面部分的运行验证。本文从SAR有效载荷数据处理的角度提供了调试和早期运行阶段的结果，解决了数据接收和SAR处理问题。特别是调谐和调整的TerraSAR-X多模式SAR处理器TMSP，以满足在轨数据特性和优化SAR聚焦结果的解决方案。相关的问题是高带宽啁啾复制处理，旁瓣抑制，多普勒频率确定，处理器归一化和相位保持。
TerraSAR-X, the first national German radar satellite, was launched in June 2007. It carries an X-band high-resolution synthetic aperture radar instrument featuring Stripmap, ScanSAR and, particularly, Spotlight imaging in a variety of different polarization modes. The mission completed its commissioning phase (CP) in December 2007, the provision of the SAR products for both the scientific and commercial user community was started in January 2008. One central TerraSAR-X element on ground is the pay-load ground segment PGS. From the beginning of the mission, PGS was nominally operated. About ten thousand data takes were already acquired and processed in 2007, not only for SAR verification and calibration purposes, but also for the operational ground segment validation. This paper provides the commissioning and early operational phase results from the SAR payload data processing perspective addressing data reception and SAR processing. Specifically the tuning and adjustment of the TerraSAR-X multi-mode SAR processor TMSP to meet the in-orbit data characteristics and to optimize the SAR focusing results is addressed. Relevant issues are the high-bandwidth chirp replica processing, side lobe suppression, Doppler frequency determination, processor normalization and phase-preservation.