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Estimation of forest parameters using CARABAS-II VHF SAR data

Fransson, Johan and Walter, Fredrik and Ulander, Lars (2000). Estimation of forest parameters using CARABAS-II VHF SAR data. IEEE transactions on geoscience and remote sensing. 38:2, 720-727
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Abstract

The use of airborne CARABAS-II VHF (20–90 MHz) SAR data for retrieval of forest parameters has been investigated. The investigation was performed at a test site located in the southwest of Sweden consisting mainly of Norway spruce forests. Regression models predicting forest parameters from radar backscattering amplitude were developed and evaluated. The results showed a linear relationship between backscattering amplitude and forest stem volume, stem diameter, and tree height. The analysis also showed that the radar signal is strongly affected by ground slope conditions. The root mean square errors from the regression analysis, restricted to forest stands on near-horizontal ground, were found to be 66 m3 ha 1, 3.2 cm, and 2.3 m for stem volume, stem diameter, and tree height respectively. No saturation of the backscattered signal was observed up to the maximum stem volume of 625 m3 ha 1, corresponding to a biomass of 375 tons ha 1. The results imply that VHF SAR data have significant potential for operational use in forestry.

Authors/Creators:Fransson, Johan and Walter, Fredrik and Ulander, Lars
Title:Estimation of forest parameters using CARABAS-II VHF SAR data
Series/Journal:IEEE transactions on geoscience and remote sensing (0196-2892)
Year of publishing :2000
Volume:38
Number:2
Page range:720-727
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0196-2892
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Area technology > Remote sensing
Keywords:CARABAS, SAR, VHF, forest parameter estimation
URN:NBN:urn:nbn:se:slu:epsilon-2-78
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-2-78
ID Code:3743
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
Deposited By: Sofia Hansson
Deposited On:03 Aug 2009 00:00
Metadata Last Modified:02 Dec 2014 10:24

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