弹载SAR图像几何失真校正误差分析
doi: 10.3724/SP.J.1146.2005.00932
Error Analysis of Geometric Distortion Correction of Missile-Borne SAR Image
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摘要: 该文主要讨论了弹载侧视合成孔径雷达(SAR)在导弹下降飞行过程中所获取图像的几何失真校正及其误差分析问题。由于要求成像的过程中，弹体的高度在不断减小，SAR图像存在严重的几何失真,该文根据成像过程中的几何关系，说明了采用子孔径RD算法获得的SAR图像几何失真的校正方法，着重对校正后图像的几何失真误差进行了分析，通过成像处理仿真试验验证了几何校正方法以及误差分析的正确性。Abstract: The paper concerns the error analysis of image geometric distortion correction for missile-borne side-looking SAR. Because of the decrease of altitude during SAR operation, the SAR image obtained by common used imaging algorithm is seriously distorted. In the paper, the geometric distortion correction method of the SAR image related to subaperture RD algorithm is presented. Especially, the errors of geometric distortion correction are analyzed. The effectiveness of the method and error analysis of the geometric distortion correction are demonstrated by simulation.
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[1] 邹维宝，任思聪，李志林. 合成孔径雷达在飞行器组合导航系统中的应用. 航天控制，2002, (1): 71-81. [2] 张澄波. 综合孔径雷达原理-系统分析与应用[M]. 北京: 科学出版社, 1989: 1-12, 538-603. [3] 刘永坦等. 雷达成像技术[M]. 哈尔滨: 哈尔滨工业大学出版社, 1999: 1-15. [4] Curlander J C and McDonough R N. Synthetic Aperture Radar System and Signal Processing. New York: John Wiley Sons Inc., 1991: 1-22. [5] 燕英，周荫清，李春升，许丽香. 弹载合成孔径雷达成像处理及定位误差分析[J].电子与信息学报.2002, 24(12):1932-1938浏览 [6] 俞根苗, 尚勇，邓海涛，张长耀，葛家龙，吴顺君. 弹载侧视SAR信号分析及成像研究. 电子学报, 2005, 33(5): 778-782. Yu Gen-miao, Shang Yong, and Deng Hai-tao, et al. Signal analysis and imaging processing of missile-borne side-looking SAR. Acta Electronica Sinica, 2005, 33(5): 778-782. [7] 魏钟铨等著. 合成孔径雷达卫星[M]. 北京: 科学出版社，2001:153-185. -
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