摘要
高空间分辨率SAR卫星为城市监测提供了宝贵数据源。在高分辨率SAR图像上,目标的多维特征得以体现,可以大大提高对城市目标的识别能力。但由于城市目标的复杂性、密集建筑物间电磁波的多次散射,以及SAR成像固有的几何畸变与噪声的影响,使得城市目标在高分辨率SAR图像上的特征更为复杂。围绕城市目标电磁散射特性与SAR成像机理、城市目标精细结构提取与三维重建等内容,介绍了国内外相关的研究进展,指出了该领域未来的研究方向。
High-resolution Synthetic Aperture Radar（SAR） satellites will provide valuable data for urban area monitoring and promote the identification of urban targets greatly,because targets take on multi-dimension characteristics in high-resolution SAR images.Nevertheless,urban targets become very complicated in high-resolution SAR images due to the spatial complexity of urban targets,multi-bounce scattering between adjacent targets,as well as the inherent geometric distortions and speckle noises of SAR imaging.In this paper,literature was reviewed surrounding electromagnetic scattering and SAR imaging mechanisms,fine structure extraction and 3D reconstruction of urban targets,and future research focus of this domain was analyzed.
出处
《遥感技术与应用》
CSCD
北大核心
2010年第3期415-422,共8页
Remote Sensing Technology and Application
基金
国防科工委项目(2008A01A0500)资助
关键词
高分辨率SAR
城市目标
电磁散射模型
三维重建
High-resolution SAR Urban target Electromagnetic scattering model 3D reconstruction
