Fransson, Johan
- Department of Forest Resource Management, Swedish University of Agricultural Sciences
Abstract
This paper deals with some aspects of thematic mapping using ERS-Envisat Tandem (EET) cross-interferometry (CInSAR). The long baseline of EET CInSAR and the short temporal baseline are in theory suitable for establishing a certain sensitivity of coherence and InSAR phase upon vegetation parameters. Here we show signatures of coherence and InSAR phase for maize fields in Switzerland, and clear-cuts and forest stem volume in Sweden. Both coherence and InSAR phase show sensitivity to vegetation height. By means of the Interferometric Water Cloud Model (IWCM) it is possible to describe the measurements by assuming a weak attenuation and low temporal decorrelation. Clearcuts show higher coherence than mature forests, although strong spatial decorrelation occurs in case of sloped terrain, not correctly accounted for when applying the common-band filter in interferometric processing. Coherence presents a certain sensitivity to stem volume, but only for flat terrain. The IWCM could describe the trend in the measurements reasonably well.
Published in
ESA SP (CD-ROM)
2010
Title: Proc. of ‘Fringe 2009’
Publisher: ESA Communications
Conference
Fringe 2009 Workshop
SLU Authors
UKÄ Subject classification
Environmental Sciences and Nature Conservation
Forest Science
Publication identifier
- ISBN: 978-92-9221-241-4
Permanent link to this page (URI)
https://res.slu.se/id/publ/28262