| 高分辨率星载SAR单视图像斑点噪声抑制实现方法 |
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| 引用本文： | 李春升,燕英,陈杰,黄岩,周荫清.高分辨率星载SAR单视图像斑点噪声抑制实现方法[J].电子学报,2000,28(3):13-16. |
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| 作者姓名： | 李春升 燕英 陈杰 黄岩 周荫清 |
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| 作者单位： | 北京航空航天大学电子工程系,北京 100083 |
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| 摘 要： | 本文提出了实现高分辨率星载合成孔径雷达单视图像斑点噪声抑制的TDRGMAP方法.它以最大后验概率滤波器实现斑点平滑,以无偏修正使其适用于单视图像,结合边缘和线条检测,并加以点目标检测及保持,获得高空间分辨率和高辐射分辨率的SAR单视图像.本文详细阐述了TDRGMAP方法的机理和实现,最后利用仿真生成的星载SAR单视图像进行实验,证明了TDRGMAP方法的有效性.
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| 关 键 词： | 斑点噪声抑制 局域方差系数 点目标检测 |
| 收稿时间： | 1998-11-19 |
Speckle Reduction for High Resolution One-Look Spaceborne SAR Images |
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| LI Chun-sheng,YAN Ying,CHEN Jie,HUANG Yan,ZHOU Yin-qing.Speckle Reduction for High Resolution One-Look Spaceborne SAR Images[J].Acta Electronica Sinica,2000,28(3):13-16. |
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| Authors: | LI Chun-sheng YAN Ying CHEN Jie HUANG Yan ZHOU Yin-qing |
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| Affiliation: | Dept.of Electronic Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China |
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| Abstract: | In this paper,a method is developed for speckle reduction of high resolution one look spaceborne synthetic aperture radar images.This method,named TDRGMAP,makes high spatial resolution and high radiometric resolution one look SAR image possible by means of smoothing speckle with MAP filter,removing bias for one look image,using edge and line detector,and preserving detected point targets.TDRGMAP is discussed in detail,and its efficiency is demonstrated with simulated spaceborne SAR image. |
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| Keywords: | speckle reduction local coefficient of variation point target detection |
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