A polarimetric model of topographic effects on P-band forest backscatter
Paper in proceedings, 2015

P-band backscatter from boreal forest is simulated using a fully polarimetric Cylinder-Over-Ground model. Trees are represented by tapered stacks of cylinders placed over lossy dielectric planar ground that is individually fitted to the topography. The results show a strong topographic dependence and also demonstrate the limitations of the odd-, even, and volume-scattering interpretation of the Pauli decomposition. BioSAR 3 SAR images, in-situ data and LiDAR-derived DCM and DTM enable a comparison with real forest backscatter through simulation of complete plots. While many features are reproduced the need for an expansion of the model to include ground and branch scattering is identified. If sufficient agreement is achieved the model will be used to further improve topographic corrections for the retrieval of above ground forest biomass from P-band SAR images.

forest backscatter

modelling

synthetic aperture radar (SAR)

P- band

topography

Author

Erik Blomberg

Chalmers, Earth and Space Sciences, Radar Remote Sensing

Maciej Soja

Chalmers, Earth and Space Sciences, Radar Remote Sensing

Lars Ulander

Chalmers, Earth and Space Sciences, Radar Remote Sensing

Proceedings of PolInSAR 2015

Subject Categories

Remote Sensing

Forest Science

Roots

Basic sciences

More information

Created

10/8/2017