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标题：EVALUATION OF THE POTENTIAL OF SAR ERS AND ASAR ENVISAT SENSORS IN MULTI-INCIDENCE AND MULTI-POLARISATION MODES FOR LANDSCAPE STUDY IN FRENCH GUYANA: EXAMPLES OF KOUROU AND SAINT LAURENT DU MARONI
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作者：JL. Kouame ; PL. Frison ; A. Mascret 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 1
出版社：Copernicus Publications
摘要：This study aims to assess the contribution of ENVISAT ASAR data for the monitoring of the littoral plains of Kourou and Saint Laurent du Maroni (French Guyana). It presents results of qualitative and quantitative analyses of SAR ERS and ASAR ENVISAT data based on the following comparative criteria for landscape types discrimination: - Comparison between SAR ERS and ASAR ENVISAT in same configuration acquisition (mode IS2) - Seasonal influences (dry vs rainy season effects), - Incidence angle influences (exploitation of ASAR ENVISAT incidence angle range), - Polarization influences (exploitation of ASAR ENVISAT Image and Alternating Polarization modes data). The calibration of the different considered radar images allows their inter comparison in order to obtain information about landscape type's properties (dielectric, moistures, real evolutions) and on homogeneous parcel of land. The study showed that different parameters, like the season, the incidence angle, and the polarization, strongly influence the radar signal observed over such landscape types. In addition, results show that ASAR-IS2 mode, similar to ERS SAR configuration ensures the continuity of SAR ERS-1&2 for land surface monitoring. However, it arises that discrimination between various types of landscape are confusing when analysing the backscattering coefficient values alone. The backscattering coefficients only cannot allow discriminating all the different landscape classes. Other parameters like texture, structure, geographical position, form and size are needed for landscape type's discrimination from radar images
关键词：Calibration; Comparison; Polarization; Landscape; Radar; SAR