| 基于T分布的雷达斑点滤波方法研究 |
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| 引用本文： | 陈云浩,邓磊,李京.基于T分布的雷达斑点滤波方法研究[J].同济大学学报(自然科学版),2005,33(11):1541-1545. |
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| 作者姓名： | 陈云浩 邓磊 李京 |
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| 作者单位： | 北京师范大学,资源科学与技术学院,北京,100875 |
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| 基金项目： | 国家高技术研究发展计划资助项目（2002AA130020,2002AA134090） |
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| 摘 要： | 在对合成孔径雷达（synthetic aperture radar,SAR）滤波器的研究状况进行回顾的基础上,介绍了基于T分布的可调节斑点噪声滤波器的算法和特点,通过目视比较和定量分析,将该滤波器与Lee,Frost,Lee-Sigma,GammaMAP等滤波器进行了比较,结果表明该滤波器在斑点滤除和细节保留方面均取得了很好的效果.最后,以1998年马来西亚吉兰丹地区SAR洪水为例,显示了可调节滤波器在水灾监测方面的巨大潜力.
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| 关 键 词： | 斑点噪声 T分布 合成孔径雷达图像 马来西亚 |
| 文章编号： | 0253-374X（2005）11-1541-05 |
| 收稿时间： | 06 9 2004 12:00AM |
| 修稿时间： | 2004-06-09 |
Synthetic Aperture Radar Speckle Filter Based on T-Distribution |
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| CHEN Yun-hao,DENG Lei,LI Jing.Synthetic Aperture Radar Speckle Filter Based on T-Distribution[J].Journal of Tongji University(Natural Science),2005,33(11):1541-1545. |
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| Authors: | CHEN Yun-hao DENG Lei LI Jing |
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| Institution: | College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China |
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| Abstract: | After the review of the synthetic aperture radar(SAR) speckle filters,this paper introduces a flexible adaptive SAR filter which is based on the T-distribution and analysis of its algorithm and characters.The comparison between this one and others,such as Lee,Frost,Lee-Sigma,Gamma-Map,was carried out with visual effect and quantitative analysis,and the results show that this filter is efficient at both speckle suppression and detail keeping.At last,this filter was used to analyze the flood of Malaysia in 1998,and the experimentation indicates that this filter is very useful in many aspects. |
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| Keywords: | speckle T-distribution synthetic aperture radar image Malaysia |
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