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- W22255315 abstract "The geometric information contained in the interferometric phase and the potential of the interferometric correlation and of the two backscatter intensities of an interferometric pair for the classification of different surface types were combined in order to generate a forest map for a part of Switzerland. Forest was mapped based on its low interferometric correlation, low backscatter change between the two images of the interferometric pair, and backscattering intensities around -10 dB. The described approach was applied to several ERS-1/2 Tandem pairs allowing to discuss the dependence of the result on system and scene parameters, including seasonal and meteorological effects. As a result of the short one day acquisition interval (as compared to the 3 and more days with ERS-1, only) less confusion occurred between forest stands, on one side, and vegetation on agricultural fields or low correlation by farming activities, on the other side. This makes the approach with Tandem data more robust for application during spnng, summer and fall. The resulting landuse maps were transformed into orthonormal coordinates using the estimated topographic heights and validated with data of the Swiss Federal Statistical Institute. The potential of SAR interferometry for forest type discrimination was also investigated. For known forest stands the interferometric correlation was related to the forest type. A reliable separation for deciduous, mixed, and coniferous forest stands was possible only with winter Tandem pairs." @default.
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- W22255315 title "Forest mapping with ERS SAR interferometry" @default.
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