Mono- and Bistatic UHF-Band SAR Measurements of a Hemi-Boreal Forest
Paper i proceeding, 2015

In this paper, the potential of mono- and bistatic HHpolarized UHF-band SAR imagery for mapping of a hemiboreal forest is studied. SAR data have been acquired with the two airborne SAR sensors LORA and SETHI during a joint FOI-ONERA campaign conducted in 2010. Three acquisition modes are compared: monostatic, quasimonostatic (difference in elevation angle around 0 degrees) and bistatic (difference in elevation angle around 6 degrees). Images acquired at two perpendicular flight headings are used, i.e. 178 degrees and 268 degrees, to evaluate the influence of topography, which often has an aggravating effect on forest variable estimation. It is observed that for the quasi-monostatic and bistatic acquisitions. the influence of ground topography is lower compared to the monostatic acquisition. A linear regression model is used to explain the dependence of the backscattering coefficient on the logarithm of biomass, and it is observed that the estimated intercept and slope are similar for the two headings only in the case of quasi-monostatic and bistatic acquisitions. of which the latter features the lowest error and the highest coefficient of determination (0.73 and 0.70, respectively, for headings 178 degrees and 268 degrees).

SETHI

bistatic

backscatter

UHF

SAR

forest

LORA

Författare

Lars Ulander

Chalmers, Rymd- och geovetenskap, Radarfjärranalys

Maciej Soja

Chalmers, Rymd- och geovetenskap, Radarfjärranalys

Anders Gustavsson

Totalförsvarets forskningsinstitut (FOI)

Erik Blomberg

Chalmers, Rymd- och geovetenskap, Radarfjärranalys

Johan Fransson

Sveriges lantbruksuniversitet (SLU)

IEEE International Geoscience and Remote Sensing Symposium

2153-6996 (ISSN)

5079-5082

Ämneskategorier

Fjärranalysteknik

Fundament

Grundläggande vetenskaper

DOI

10.1109/IGARSS.2015.7326975

ISBN

978-1-4799-7929-5

Mer information

Senast uppdaterat

2018-04-11