| 强噪声SAR干涉图的等值线中值–Goldstein 二级滤波 |
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| 引用本文： | 李佳,李志伟,丁晓利,朱珺,汪长城.强噪声SAR干涉图的等值线中值–Goldstein 二级滤波[J].遥感学报,2011,15(4):750-765. |
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| 作者姓名： | 李佳 李志伟 丁晓利 朱珺 汪长城 |
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| 作者单位： | 中南大学 信息物理工程学院,湖南 长沙 410083;湖南省普通高校精密工程测量及形变灾害监测重点实验室,湖南 长沙 410083;香港理工大学 土地测量与地理资讯学系,香港;中南大学 信息物理工程学院,湖南 长沙 410083;湖南省普通高校精密工程测量及形变灾害监测重点实验室,湖南 长沙 410083;香港理工大学 土地测量与地理资讯学系,香港;中南大学 信息物理工程学院,湖南 长沙 410083;湖南省普通高校精密工程测量及形变灾害监测重点实验室,湖南 长沙 410083;香港理工大学 土地测量与地理资讯学系,香港;中南大学 信息物理工程学院,湖南 长沙 410083;湖南省普通高校精密工程测量及形变灾害监测重点实验室,湖南 长沙 410083;香港理工大学 土地测量与地理资讯学系,香港;中南大学 信息物理工程学院,湖南 长沙 410083;湖南省普通高校精密工程测量及形变灾害监测重点实验室,湖南 长沙 410083;香港理工大学 土地测量与地理资讯学系,香港 |
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| 基金项目： | 国家自然科学基金项目(编号：40974006；编号：40774003；编号：40901172)；教育部新世纪优秀人才支持计划(编号：NCET-08-0570)；中南大学学位论文创新资助项目(编号：2010ssxt228) |
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| 摘 要： | 结合等值线滤波条纹边缘保持能力强和Goldstein滤波平滑效果好的特点,并且引入伪相干值对Goldstein滤波因子进行改进,提出InSAR干涉图的等值线中值-Goldstein二级滤波方法.模拟数据和真实数据的实验结果证明,强噪声干涉图经过新方法滤波后噪声水平大大降低而且分布均匀,条纹细节信息保持良好,在原本看不到...
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| 关 键 词： | InSAR 干涉图 等值线中值滤波 Goldstein滤波 去噪 条纹保持 |
| 收稿时间： | 2010/5/13 0:00:00 |
| 修稿时间： | 9/4/2010 12:00:00 AM |
Filtering strong noisy synthetic aperture radar (SAR) interferogram with integrated Contoured Median and Goldstein two-step fi lter |
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| LI Ji,LI Zhiwei,DING Xiaoli,ZHU Jun and WANG Changcheng.Filtering strong noisy synthetic aperture radar (SAR) interferogram with integrated Contoured Median and Goldstein two-step fi lter[J].Journal of Remote Sensing,2011,15(4):750-765. |
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| Authors: | LI Ji LI Zhiwei DING Xiaoli ZHU Jun and WANG Changcheng |
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| Institution: | School of Info-Physics and Geomatics Engineering, Central South University, Huna Changsha 410083, China;Key Lab. Of Precise Engineering Surveying & Deformation Hazard Monitoring of Hunan Province, Huna Changsha 410083, China;Dept. of Land Surveying & Geo-;School of Info-Physics and Geomatics Engineering, Central South University, Huna Changsha 410083, China;Key Lab. Of Precise Engineering Surveying & Deformation Hazard Monitoring of Hunan Province, Huna Changsha 410083, China;Dept. of Land Surveying & Geo-;School of Info-Physics and Geomatics Engineering, Central South University, Huna Changsha 410083, China;Key Lab. Of Precise Engineering Surveying & Deformation Hazard Monitoring of Hunan Province, Huna Changsha 410083, China;Dept. of Land Surveying & Geo-;School of Info-Physics and Geomatics Engineering, Central South University, Huna Changsha 410083, China;Key Lab. Of Precise Engineering Surveying & Deformation Hazard Monitoring of Hunan Province, Huna Changsha 410083, China;Dept. of Land Surveying & Geo-;School of Info-Physics and Geomatics Engineering, Central South University, Huna Changsha 410083, China;Key Lab. Of Precise Engineering Surveying & Deformation Hazard Monitoring of Hunan Province, Huna Changsha 410083, China;Dept. of Land Surveying & Geo- |
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| Abstract: | At present, most of the traditional fi lters such as Goldstein, Lee, Median, Mean, and Periodic fi lter, can not meet the demand of noise suppression for interferograms contaminated by phase noise. Repeat fi ltering, however, will result in serious loss of fringe pattern. In this paper, a two-step fi lter is presented. The fi lter inherits the good edge preservation characteristics of the Contoured window fi lter and the strong smoothing capability of the Goldstein fi lter. In addition, it introduces the pseudocoherence of interferogram to improve the adaptiveness of the Goldstein fi lter. Experimental results with both simulated and real data show that the proposed fi lter performs quite well both in noise reduction and in detail preservation. Moreover, it can partially recover continuous interferometric fringes from area without signals, and is applicable for interferograms with very dense and heavily curved fringes. |
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| Keywords: | InSAR strong noisy Contoured median Filter Goldstein Filter noise reduction fringe preservation |
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