Estimating Tropical-Forest Density Profiles from Multibaseline Interferometric SAR

Conference: EUSAR 2006 - 6th European Conference on Synthetic Aperture Radar
05/16/2006 - 05/18/2006 at Dresden, Germany

Proceedings: EUSAR 2006

Pages: 3Language: englishTyp: PDF

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Treuhaft, Robert; Chapman, Bruce (Jet Propulsion Laboratory, California Institute of Technology, USA)
Santos, João Roberto dos; Dutra, Luciano; Gonçalves, Fabio; Costa Freitas, Corina da; Mura, Jose Claudio (Instituto Nacional de Pesquisas Espaciais, Brazil)
Alencastro Graca, Paulo Maurício de (Instituto Nacional de Pesquisas da Amazônia, Brazil)
Drake, Jason (USDA Forest Service, USA)

Vertical profiles of forest density are potentially robust indicators of forest biomass, fire susceptibility and eco system function. Tropical forests, which are among the most dense and complicated targets for remote sensing, contain about 45% of the world’s biomass. Remote sensing of tropical forest structure is therefore an important component to global biomass and carbon monitoring. This paper shows preliminary results of a multibaseline interferometric SAR (InSAR) experiment over primary, secondary, and selectively logged forests at La Selva Bi ological Station in Costa Rica. The profile shown results from inverse Fourier transforming 8 of the 18 baseli nes acquired. A profile is shown compared to lidar and field measurements. Results are highly preliminary and for qualitative assessment only. Parameter estimation will eventually replace Fourier inversion as the means to producing profiles.