基于尺度空间的角反射器车载SAR影像坐标定位  

Coordinate location of corner reflector in vehicle-mounted SAR image based on scale space

作　　者：戴国梦 潘斌[1] 罗天文 魏思奇[3] DAI Guomeng;PAN Bin;LUO Tianwen;WEI Siqi(School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430079,China;Guizhou Institue of Technology Water Conservancy and Hydroelectric Power Research Institute of Guizhou,Guiyang 550000,China;Spatial Information Technology Application Department,Yangtze River Scientific Research Institute,Wuhan 430010,China)

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430079 [2]贵州省水利水电勘测设计研究院,贵州贵阳550000 [3]长江科学院空间信息技术应用研究所,湖北武汉430010

出　　处：《测绘通报》2020年第4期1-5,共5页Bulletin of Surveying and Mapping

基　　金：贵州省重大科技专项(黔科合重大专项字〔2017〕3005号);国家重点研发计划(2018YFC0407804);贵州省科技计划(黔科合支撑〔2016〕2030)。

摘　　要：确定角反射器(CR)在SAR影像中的高精度影像坐标是合成孔径雷达影像(SAR)几何校正、辐射校正和形变检测等研究的基础。本文提出了一种基于尺度空间的角反射器车载SAR影像坐标定位方法。通过对仿真数据和车载SAR影像数据的角反射器进行定位试验,验证了该方法的可行性和稳定性;并与使用地面控制点几何纠正后的角反射器定位结果进行对比,验证了该方法满足子像素级定位精度的需要,且无需地面控制点。Determining the high-precision image coordinates of CR in SAR images is the basis of geometric correction,radiometric correction and deformation detection of SAR images. This paper presents a coordinate location method of corner reflector in vehiclemounted SAR image based on scale space. Through corner reflector location experiment in the simulation data and vehicle-mounted SAR data,the feasibility and stability of the method are verified. Compared with the location result after geometric correction using ground control points,the method satisfies the location accuracy of sub-pixel level and does not need ground control points.

关 键 词：车载SAR 尺度空间 角反射器 坐标定位 子像素级 

分 类 号：P237[天文地球—摄影测量与遥感]