Tropical-Forest-Parameter Estimation by Means of Pol-InSAR: The INDREX-II Campaign

This paper addresses the potential and limitations of polarimetric synthetic aperture radar (SAR) interferometry (Pol-InSAR) inversion techniques for quantitative forest-parameter estimation in tropical forests by making use of the unique data set acquired in the frame of the second Indonesian Airbo...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2009-02, Vol.47 (2), p.481-493
Main Authors: Hajnsek, I., Kugler, F., Seung-Kuk Lee, Papathanassiou, K.P.
Format: Article
Language:English
Subjects:
Airborne radar
Applied geophysics
Asia
Decorrelation
Earth sciences
Earth, ocean, space
Exact sciences and technology
Forest height
Frequency
Grounds
Interferometry
Internal geophysics
Inversions
Laser radar
Lidar
Light detection and ranging
Optical interferometry
polarimetric SAR interferometry (Pol-InSAR)
Polarimetric synthetic aperture radar
Radar detection
Synthetic aperture radar
synthetic aperture radar (SAR)
temporal decorrelation
Testing
tropical forest
X-band
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Summary:This paper addresses the potential and limitations of polarimetric synthetic aperture radar (SAR) interferometry (Pol-InSAR) inversion techniques for quantitative forest-parameter estimation in tropical forests by making use of the unique data set acquired in the frame of the second Indonesian Airborne Radar Experiment (INDREX-II) campaign - including Pol-InSAR, light detection and ranging (LIDAR), and ground measurements - over typical Southeast Asia forest formations. The performance of Pol-InSAR inversion is not only assessed primarily at L- and P-band but also at higher frequencies, namely, X-band. critical performance parameters such as the ldquovisibility of the groundrdquo at L- and P-band as well as temporal decorrelation in short-time repeat-pass interferometry are discussed and quantitatively assessed. Inversion performance is validated against LIDAR and ground measurements over different test sites.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2008.2009437