L
Lars M. H. Ulander
Researcher at Chalmers University of Technology
Publications - 298
Citations - 6711
Lars M. H. Ulander 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 38, co-authored 295 publications receiving 5997 citations. Previous affiliations of Lars M. H. Ulander include Canada Centre for Remote Sensing & Swedish Defence Research Agency.
Papers
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Proceedings ArticleDOI
Model-Based Estimation of Tropical Forest Biomass from Notch-Filtered P-Band Sar Backscatter
Maciej J. Soia,Mauro Mariotti d'Alessandro,Shaun Quegan,Stefano Tebaldini,Lars M. H. Ulander +4 more
TL;DR: A semi-empirical model is fitted to spatial and polarization trends in the backscatter data and no reference biomass data is needed for training, and an evaluation on airborne P-band SAR data from a tropical test site in Gabon results in a root-mean-square error lower than 20% and a correlation better than 90%.
Proceedings ArticleDOI
Motion compensation effects for repeat-pass processing in wavelength-resolution SAR
P.-O. Frolind,Lars M. H. Ulander +1 more
TL;DR: An investigation of the image response change of a target placed at the nominal reference height due to motion compensation of ultra-widebeam VHF SAR is performed.
Proceedings ArticleDOI
Estimation of boreal forest biomass from two-level model inversion of interferometric TanDEM-X data
TL;DR: A new model for aboveground biomass estimation from forest height and canopy density estimates obtained from the inversion of a two-level model (TLM) is presented and studied using data from the hemi-boreal test site Remningstorp, situated in southern Sweden.
Proceedings ArticleDOI
BIOMASS end-to-end mission performance simulator
Paco Lopez-Dekker,Francesco De Zan,Thomas Börner,Marwan Younis,Kostas Papathanassiou,Tomas Guardabrazo,Valerie Bourlon,Sophie Ramongassie,Nicolas Taveneau,Lars M. H. Ulander,Daniel Murdin,Neil Rogers,Shaun Quegan,Raffaella Franco +13 more
TL;DR: This paper discusses the implementation of an end-to-end simulator for the BIOMASS mission and an overview of the system architecture is provided along with a functional description of the modules that comprise the simulator.
Proceedings ArticleDOI
Change detection of vehicle-sized targets in forest concealment using VHF- and UHF-band SAR
Lars M. H. Ulander,B. Flood,Per-Olov Frolind,Anders Gustavsson,T. Jonsson,Bjorn Larsson,Mikael Lundberg,Daniel Murdin,G. Stenstrom +8 more
TL;DR: Analysis of the data shows that performance degrades for increasing incidence angle, mainly due to reduced target radar-cross section, and it is shown that different change detectors give different performance.