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Sentinel-1卫星TOPS模式影像通常在几何配准的基础上，再次利用Burst重叠区域进行增强谱分集处理以实现高精度配准。几何配准主要依赖卫星轨道参数，难以进一步提高其配准精度，因此Sentinel-1影像配准的关键则是通过增强谱分集准确估计出几何配准后的残余偏移量。然而，增强谱分集易受失相干噪声等因素的影响，低相干条件下难以满足0.001像素的配准精度要求。因此本文首先针对单基线条件下的增强...
AUTOMATIC 3D RECONSTRUCTION OF BUILDINGS ROOF TOPS IN DENSELY URBANIZED AREAS
3D reconstruction RANSAC plane fitting moments of inertia Automation Building
2018/11/9
3D reconstruction of the urban environment constitutes a well-studied problem in the field of photogrammetry and computer vision, attracting the growing interest of the scientific community, for many ...
RELATIONSHIP BETWEEN HIMAWARI-8-DERIVED OVERSHOOTING TOPS AND EXTREME WEATHER EVENTS IN SOUTHEAST ASIA
Overshooting Tops Precipitation Infrared texture Machine learning
2016/11/23
Severe weathers such as heavy rainfall, floods, strong wind, and lightning are closely related with the strong convection activities of atmosphere. Overshooting tops sometimes occur by deep convection...
针对基于地球同步轨道条带模式合成孔径雷达(synthetic aperture radar,SAR)发射无人机循序渐进对地扫描模式SAR接收组成的星机双基结构(GEO-bistatic radar with GEOSAR and UAVSAR, GEO-UAV BiSAR),提出了该工作模式下的成像算法。首先,基于泰勒展开原理推导了双基斜距,考虑到该双基斜距的空变特性,应用级数反演方法推导了具有距...
基于方位FNCS的斜视TOPS SAR成像方法
频域非线性变标 修正的线频调变标算法 谱分析
2013/5/28
针对斜视循序扫描地形观测（terrain observation by progressive scans, TOPS）合成孔径雷达（synthetic aperture radar, SAR）模式，提出了一种新的全孔径成像处理方法。首先对距离走动校正后的数据进行方位预处理得到无模糊的二维频谱，在此基础上采用修正的线频调变标算法完成距离脉压及距离徙动校正；然后在距离多普勒域进行频域非线性变标（fr...
University of Queensland research tops nation in latest round of ARC funding
mining production crop
2007/5/22
22 May 2007，The University of Queensland has received the largest share of funding in the country for Australian Research Council Linkage project grants.UQ received funding for 16 projects worth a tot...