NDLI: Forest temporal decorrelation: 3D analyses and processing in the Diff-Tomo framework

Content Provider	IEEE Xplore Digital Library
Author	Lombardini, F. Viviani, F. Cai, F. Dini, F.
Copyright Year	2013
Description	Author affiliation: Dept. of Inf. Eng., Univ. of Pisa, Pisa, Italy (Lombardini, F.; Viviani, F.; Cai, F.; Dini, F.)
Abstract	Techniques based on coherent combination of complex (amplitude and phase) SAR data, in particular Pol-InSAR and 3D multibaseline SAR Tomography (Tomo-SAR), can extract rich information on complex scenarios with multiple scatterers mapped in the SAR cell. However, forest scenarios are characterized by a temporal decorrelating volume canopy scatterer, and a set of related open problems exists, in particular for Tomo-SAR techniques to be applied to space monitoring of biomass. Multipass/multibaseline 4D Differential Tomography (Diff-Tomo) is a promising advancement in this field, furnishing space-time signatures of multiple scatterer dynamics in the SAR cell, in particular with urban applications. In this paper, to deal with the forest decorrelation issues in Tomo-SAR, experimental advances are presented of the original extension of Diff-Tomo methods for analyzing vegetated scenes, to extract jointly geometric and dynamic information of forest layers. The Diff-Tomo enabled functionalities are separation in the height dimension of different temporal coherence levels that are mixed (undiscriminated) in classical total coherence analyses (“Tomography of coherences”), and 3D Tomography robust to temporal decorrelation. Extended airborne P-band multipolarimetric results and phenomenological investigations are shown.
Sponsorship	IEEE Geosci. Remote Sens. Soc.
Starting Page	1202
Ending Page	1205
File Size	4505685
Page Count	4
File Format	PDF
ISBN	9781479911141
ISSN	21536996
DOI	10.1109/IGARSS.2013.6721382
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-21
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decorrelation Tomography Bandwidth Three-dimensional displays Coherence Synthetic aperture radar temporal decorrelation SAR tomography multidimensional signals volume scattering
Content Type	Text
Resource Type	Article

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