G
Gustaf Sandberg
Researcher at Chalmers University of Technology
Publications - 24
Citations - 461
Gustaf Sandberg is an academic researcher from Chalmers University of Technology. The author has contributed to research in topics: Synthetic aperture radar & Radar. The author has an hindex of 10, co-authored 24 publications receiving 435 citations.
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Journal ArticleDOI
L- and P-band backscatter intensity for biomass retrieval in hemiboreal forest
Gustaf Sandberg,Lars M. H. Ulander,Lars M. H. Ulander,Johan E. S. Fransson,Johan Holmgren,T. Le Toan +5 more
TL;DR: In this paper, the relation between polarimetric SAR backscatter measurements at low frequencies and forest biomass is investigated using data acquired within the BioSAR-I campaign in southern Sweden during 2007.
Journal ArticleDOI
Regression-Based Retrieval of Boreal Forest Biomass in Sloping Terrain Using P-Band SAR Backscatter Intensity Data
TL;DR: A new biomass retrieval model for boreal forest using polarimetric P-band synthetic aperture radar (SAR) backscatter is presented, and biomass in Remningstorp is retrieved with RMSE of 22–33% of the mean biomass, which is lower compared to the other models.
Proceedings ArticleDOI
Detection of forest changes using ALOS PALSAR satellite images
Johan E. S. Fransson,M. Magnusson,Håkan Olsson,Leif E. B. Eriksson,Gustaf Sandberg,G. Smith-Jonforsen,Lars M. H. Ulander +6 more
TL;DR: The results clearly show that the clear-felled stands could be separated from the reference stands, implying that ALOS PALSAR data potentially can be used for large-scale mapping of changes in forest cover.
Journal ArticleDOI
A Physical-Optics Model for Double-Bounce Scattering From Tree Stems Standing on an Undulating Ground Surface
TL;DR: The results indicate that ground topography must be considered when predicting the variations in backscatter in the SAR images studied, and the model did, however, fail to predict the absolute values of the backscattered intensity.
Journal ArticleDOI
Measurements of Forest Biomass Change Using P-Band Synthetic Aperture Radar Backscatter
TL;DR: Simulations show that, with 64 equivalent number of looks (ENL) and a 50% change in biomass, it is possible to correctly indicate whether the forest has gained or lost biomass, and suggests that not only clear-cuts but also growth and thinning can be measured.