| 一种新的机载SAR图像几何校正和定位算法 |
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| 引用本文： | 孙文峰,陈安,邓海涛,俞根苗.一种新的机载SAR图像几何校正和定位算法[J].电子学报,2007,35(3):553-556. |
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| 作者姓名： | 孙文峰 陈安 邓海涛 俞根苗 |
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| 作者单位： | 1. 中国电子科技集团公司第38研究所,安徽合肥 230031;2. 武汉雷达学院,湖北武汉 430019 |
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| 摘 要： | 机载合成孔径雷达常采用时域子孔径成像,所得到的图像是地面散射单元到成像平面的一种空变映射.通过联立求解等距离方程和等多普勒方程得到了这种映射的解析表达式,提出了一种新的图像无参考点几何校正和像素点定位的距离一多普勒算法,并用点阵仿真和外场试验验证了算法的有效性.
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| 关 键 词： | 机载合成孔径雷达 子孔径 几何校正 目标定位 |
| 文章编号： | 0372-2112（2007）03-0553-04 |
| 收稿时间： | 2005-09-05 |
| 修稿时间： | 2005-09-052006-06-08 |
A Novel Geometric Calibration and Target Location Algorithm for Air-Borne SAR Image |
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| SUN Wen-feng,CHEN An,DENG Hai-tao,YU Gen-miao.A Novel Geometric Calibration and Target Location Algorithm for Air-Borne SAR Image[J].Acta Electronica Sinica,2007,35(3):553-556. |
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| Authors: | SUN Wen-feng CHEN An DENG Hai-tao YU Gen-miao |
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| Affiliation: | 1. China Electronic Technology Group Corporation No.38 Research Institute,Hefei,Anhui 230031,China;2. ;3. |
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| Abstract: | Sub-aperture imaging algorithm is often used in air-borne Synthetic Aperture Radar(SAR) in practice,the true position of every pixel in the image lie on the geometric relationship between radar and scatter cell,A new geometric calibration and target location algorithm is proposed,which obtains coordinates of each pixel in SAR image by means of solution of range equation and Doppler equation.The validity of the algorithm is validated by simulated scatter cell array and location experiment. |
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| Keywords: | air-borre SAR sup-aperture geometric calibration target location |
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