http://www.gissky.net- GIS空间站

 为检测TERRASAR、COSMO SkyMed、RADARSAT-2等星载高分辨率合成孔径雷达影像(SAR)在土地利用调查监测中的适用性,该文针对高分辨率SAR数据和产品特性,提出了控制点选取方法,分析了不同纠正模型的应用效果。试验表明高分辨率SAR几何纠正一般需要10～15个控制点,1m聚束模式纠正中误差约3m～5m,3m条带模式纠正中误差约5m～8m,分别满足1∶1万和1∶2.5万土地调查监测几何精度要求。研究结果为构建基于高分辨率SAR数据土地利用调查监测应用技术流程和促进高分辨率极化SAR数据业务化应用奠定了基础。 更多还原

【Abstract】 In order to test suitability of the high spatial resolution SAR(1m/3m) for land dynamic change monitoring,in this paper the TERRASAR、COSMO SkyMed and RADARSAT-2 data were used for deep study.The critic problems of geo-rectification of the high spatial resolution SAR data are analyzed;the principle and method of GCP collection are proposed;different SAR geometric correction models are used for comparison and their suitability is discussed.The results show that 10-15 GCP is required to obtain a go... 更多还原