Open AccessProceedings Article
Polarimetric SAR interferometry
Shane R. Cloude,Konstantinos Papathanassiou +1 more
- Vol. 36, Iss: 5, pp 1551-1565
TLDR
In this article, the role of polarimetry in synthetic aperture radar (SAR) interferometry is examined and a coherent decomposition for polarimetric SAR inter-ferometry that allows the separation of the effective phase centers of different scattering mechanisms is introduced.Abstract:
In this paper, we examine the role of polarimetry in synthetic aperture radar (SAR) interferometry. We first propose a general formulation for vector wave interferometry that includes conventional scalar interferometry as a special case. Then, we show how polarimetric basis transformations can be introduced into SAR interferometry and applied to form interferograms between all possible linear combinations of polarization states. This allows us to reveal the strong polarization dependency of the interferometric coherence. We then solve the coherence optimization problem involving maximization of interferometric coherence and formulate a new coherent decomposition for polarimetric SAR interferometry that allows the separation of the effective phase centers of different scattering mechanisms. A simplified stochastic scattering model for an elevated forest canopy is introduced to demonstrate the effectiveness of the proposed algorithms. In this way, we demonstrate the importance of wave polarization for the physical interpretation of SAR interferograms. We investigate the potential of polarimetric SAR interferometry using results from the evaluation of fully polarimetric interferometric shuttle imaging radar (SIR)-C/X-SAR data collected during October 8-9, 1994, over the SE Baikal Lake Selenga delta region of Buriatia, Southeast Siberia, Russia.read more
Citations
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Journal ArticleDOI
Synthetic aperture radar interferometry
Richard Bamler,Philipp Hartl +1 more
TL;DR: In this article, a review of the technology and signal theoretical aspects of InSAR is presented, where the phase differences of at least two complex-valued SAR images acquired from different orbit positions and/or at different times are exploited to measure several geophysical quantities, such as topography, deformations, glacier flows, ocean currents, vegetation properties, etc.
Journal ArticleDOI
Three-stage inversion process for polarimetric SAR interferometry
TL;DR: In this article, a geometrical approach for the inversion of a two-layer coherent scattering model, widely used for the interpretation of polarimetric interferometric SAR data, is presented.
Journal ArticleDOI
The BIOMASS mission: Mapping global forest biomass to better understand the terrestrial carbon cycle
T. Le Toan,Shaun Quegan,Malcolm Davidson,Heiko Balzter,Philippe Paillou,Konstantinos Papathanassiou,S. Plummer,Fabio Rocca,Sassan Saatchi,Herman H. Shugart,Lars M. H. Ulander +10 more
TL;DR: In this article, a P-band polarimetric SAR with interferometric capability is used to measure the magnitude and distribution of forest biomass globally to improve resource assessment, carbon accounting and carbon models, and to monitor and quantify changes in terrestrial forest biomass.
Journal ArticleDOI
Improved Sigma Filter for Speckle Filtering of SAR Imagery
TL;DR: The bias problem is solved by redefining the sigma range based on the speckle probability density functions, and a target signature preservation technique is developed to mitigate the problems of blurring and depressing strong reflective scatterers.
Proceedings ArticleDOI
First demonstration of airborne SAR tomography using multibaseline L-band data
TL;DR: The authors present the concept of aperture synthesis for 3D-imaging for the case of the multibaseline imaging geometry and discuss the limits arising from the limited number of flight tracks and their irregular spatial distribution.
References
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Journal ArticleDOI
A review of target decomposition theorems in radar polarimetry
Shane R. Cloude,Eric Pottier +1 more
TL;DR: This paper unify the formulation of these different approaches using transformation theory and an eigenvector analysis of the covariance or coherency matrix of the scattering matrix for target decomposition theory in radar polarimetry.
Journal ArticleDOI
An entropy based classification scheme for land applications of polarimetric SAR
Shane R. Cloude,Eric Pottier +1 more
TL;DR: The authors outline a new scheme for parameterizing polarimetric scattering problems that relies on an eigenvalue analysis of the coherency matrix and employs a three-level Bernoulli statistical model to generate estimates of the average target scattering matrix parameters from the data.
Journal ArticleDOI
Decorrelation in interferometric radar echoes
Howard A. Zebker,J. Villasenor +1 more
TL;DR: It is found that there is decorrelation increasing with time but that digital terrain model generation remains feasible and such a technique could provide a global digital terrain map.
Journal ArticleDOI
Synthetic aperture radar interferometry
Richard Bamler,Philipp Hartl +1 more
TL;DR: In this article, a review of the technology and signal theoretical aspects of InSAR is presented, where the phase differences of at least two complex-valued SAR images acquired from different orbit positions and/or at different times are exploited to measure several geophysical quantities, such as topography, deformations, glacier flows, ocean currents, vegetation properties, etc.
Journal ArticleDOI
Topographic mapping from interferometric synthetic aperture radar observations
TL;DR: In this article, the authors reported the production of high-resolution topographic maps derived from interferometric synthetic aperture radar observations of the earth, which is related to the stereo technique in that the terrain is viewed at two different angles.