Fransson, Johan
- Institutionen för skoglig resurshushållning och geomatik, Sveriges lantbruksuniversitet
Sammanfattning
Retrieval of forest stem volume using SAR in the lower VHF-band holds great promise. The basic idea is that coniferous trees behave as Rayleigh scatterers with a backscatter proportional to stem volume. In the paper, measurements using the CARABAS SAR at five different test sites are compared. We conclude that backscatter on horizontal ground indeed has a simple linear relation with stem volume. No signs of saturation is found up to 10oom(3)/ha. The proportionality factor is however slightly dependent on ground reflection coefficient. The paper also evaluates temporal stability using repeat-tracks. High repeatability is found after I hour (R-2=99%) and 20 months (R-2=91 %) implying good system and scene stability.
Nyckelord
Testing; Space technology; Rayleigh scattering; Stability; Remote sensing; Biomass; Carbon dioxide; Protocols; Forestry; Frequency
Publicerad i
IEEE International Geoscience and Remote Sensing Symposium proceedings
2000, sidor: 441-443
Titel: IGARSS 2000 : proceedings : IEEE 2000 International Geoscience and Remote Sensing Symposium : taking the pulse of the planet, the role of remote sensing in managing the environment : 24-28 July, 2000, Hilton Hawaiian Village, Honolulu, Hawaii, USA
Utgivare: IEEE
Konferens
IGARSS 2000 Symposium, Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment, Honolulu, USA, 24-28 July, 2000
SLU författare
Associerade SLU-program
Remningstorp
UKÄ forskningsämne
Skogsvetenskap
Jordobservationsteknik
Publikationens identifierare
- DOI: https://doi.org/10.1109/IGARSS.2000.860558
- ISBN: 0-7803-6359-0
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/139279