Biomass Retrieval Algorithm Based on P-band BioSAR Experiments of Boreal Forest
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2011

A new biomass retrieval algorithm based on P-band multi-polarization backscatter has been developed and evaluated based on SAR and ground data over boreal forest. SAR data collections were conducted on three dates at a test site in southern Sweden (Remningstorp, biomass < 300 tons/ha; late winter to early summer 2007) and on a single date at a test site in northern Sweden (Krycklan, biomass < 200 tons/ha; fall 2008). The retrieval algorithm is a multiple linear regression model including the HV-polarized backscatter coefficient, the VV/HH backscatter ratio and the ground slope. Regression coefficients were determined from Krycklan data followed by algorithm evaluation using Remningstorp data. The results from the latter show that RMS errors vary in the range 29-42 tons/ha depending on date and stand type. The new algorithm is also compared with alternative algorithms and found to give significantly better performance. The developed model is a significant step towards an algorithm which gives consistent results across multiple sites and dates, i.e. when forest structure, topography and moisture conditions is expected to vary.

backscatter

retrieval algorithm

BIOMASS

SAR

biomass

P-band

BioSAR

boreal forest

Författare

Lars Ulander

Chalmers, Rymd- och geovetenskap, Radarfjärranalys

Gustaf Sandberg

Chalmers, Rymd- och geovetenskap, Radarfjärranalys

Maciej Soja

Chalmers, Rymd- och geovetenskap, Radarfjärranalys

IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011. Vancouver, 24-29 July 2011

4245-4248

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Fundament

Grundläggande vetenskaper

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/IGARSS.2011.6050168

ISBN

978-145771005-6