| 基于尺度空间的角反射器车载SAR影像坐标定位 |
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| 引用本文： | 戴国梦,潘斌,罗天文,魏思奇.基于尺度空间的角反射器车载SAR影像坐标定位[J].测绘通报,2020,0(4):1-5. |
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| 作者姓名： | 戴国梦 潘斌 罗天文 魏思奇 |
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| 作者单位： | 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 |
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| 基金项目： | 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） |
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| 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。
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| 关 键 词： | 车载SAR 尺度空间 角反射器 坐标定位 子像素级 |
| 收稿时间： | 2019-06-26 |
Coordinate location of corner reflector in vehicle-mounted SAR image based on scale space |
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| DAI Guomeng,PAN Bin,LUO Tianwen,WEI Siqi.Coordinate location of corner reflector in vehicle-mounted SAR image based on scale space[J].Bulletin of Surveying and Mapping,2020,0(4):1-5. |
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| Authors: | DAI Guomeng PAN Bin LUO Tianwen WEI Siqi |
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| Institution: | 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;2. Guizhou Institue of Technology Water Conservancy and Hydroelectric Power Research Institute of Guizhou, Guiyang 550000, China;3. Spatial Information Technology Application Department, Yangtze River Scientific Research Institute, Wuhan 430010, China |
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| Abstract: | 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 vehicle-mounted 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. |
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| Keywords: | vehicle-mounted SAR scale space corner reflector coordinate location sub-pixel level |
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