Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1109/36.905230 |
Analysis of topographic decorrelation in SAR interferometry using ratio coherence imagery | |
Lee, H; Liu, JG | |
通讯作者 | Lee, H |
来源期刊 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
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ISSN | 0196-2892 |
出版年 | 2001 |
卷号 | 39期号:2页码:223-232 |
英文摘要 | Topographic decorrelation due to the local surface slope has been an obstacle to interferometric synthetic aperture radar (InSAR) applications. A modified spatial decorrelation function is derived as a function of the baseline and topography, This function explains the origin of the total topographic decorrelation phenomenon on the slopes directly facing radar illumination and layover, which may mislead InSAR coherence image interpretation. We define critical terrain slope (or critical incidence angle) as the angle for which two SAR signals completely decorrelate regardless of surface stability. It is found that the width of the critical terrain slope increases with the increase of the component of the baseline perpendicular to the radar look direction. A new analytical method, the ratio coherence imagery, is then introduced to highlight total topographic decorrelation against the temporal decorrelation features. The applications of this methodology are demonstrated in selected locations in the Sahara Desert, Algeria, and Almeria, Spain, using ERS-1 and ERS-2 SAR data, |
英文关键词 | coherence critical terrain slope ratio coherence imagery SAR interferometry topographic decorrelation |
类型 | Article |
语种 | 英语 |
国家 | England |
收录类别 | SCI-E |
WOS记录号 | WOS:000167249800001 |
WOS关键词 | SYNTHETIC-APERTURE RADAR ; PHASE STATISTICS |
WOS类目 | Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/140913 |
作者单位 | (1)Univ London Imperial Coll Sci Technol & Med, TH Huxley Sch Environm Earth Sci & Engn, London SW7 2BP, England |
推荐引用方式 GB/T 7714 | Lee, H,Liu, JG. Analysis of topographic decorrelation in SAR interferometry using ratio coherence imagery[J],2001,39(2):223-232. |
APA | Lee, H,&Liu, JG.(2001).Analysis of topographic decorrelation in SAR interferometry using ratio coherence imagery.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,39(2),223-232. |
MLA | Lee, H,et al."Analysis of topographic decorrelation in SAR interferometry using ratio coherence imagery".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 39.2(2001):223-232. |
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