Title :
Analysis of TanDEM-X InSAR data aimed at the characterisation of vegetation vertical structure: A case study in injune (Queensland, Australia)
Author :
De Grandi, Elsa Carla ; Lucas, Richard ; Clewley, D. ; Bunting, P. ; Mitchard, Edward
Author_Institution :
Inst. of Geogr. & Earth Sci., Univ. of Wales Aberystwyth, Aberystwyth, UK
Abstract :
TanDEM-X provides a unique opportunity for environmental studies, being the first single-pass radar interferometer in space which employs two synthetic aperture radar (SAR) satellites flying in formation with the possibility to adjust baselines by several metres or kilometres. These characteristics allow in principle for the retrieval of forest biophysical parameters based on two mechanisms. Interferometric coherence, which is not affected by temporal decorrelation, can supply information on biomass, and allow for accurate determination of surface height even in the presence of a vegetation layer. In turn, a vegetation canopy height model (CHM) can be generated given information on the terrain elevation (DTM). In this work, the potential and limitations of TanDEM-X data with respect to these bio-physical parameters estimates and in the context of an open woodland structure characterization is explored.
Keywords :
data analysis; digital elevation models; radar interferometry; remote sensing by radar; spaceborne radar; synthetic aperture radar; vegetation; vegetation mapping; Australia; DTM; Injune; Queensland; SAR satellite; TanDEM-X InSAR data analysis; baseline adjustment; biomass information; biophysical parameter estimation; environmental study; forest biophysical parameter retrieval; formation flying; interferometric coherence; open woodland structure characterization; single-pass radar interferometer; surface height determination; synthetic aperture radar; temporal decorrelation; terrain elevation; vegetation CHM; vegetation canopy height model; vegetation layer; vegetation vertical structure characterisation; Australia; Coherence; Correlation; Laser radar; Synthetic aperture radar; Vegetation mapping; Australia; InSAR; LiDAR; TanDEM-X; vegetation vertical structure;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4799-1114-1
DOI :
10.1109/IGARSS.2013.6721121