Results 121 to 130 of about 2,152 (176)

Sar Interferometry And Its Applications

Surveys in Geophysics, 2000
Satellite mounted Synthetic Aperture Radars (SAR) provide informationof the amplitude of the backscatterer its phase. This corresponds to the totaltravel time (source receiver and back), plus the phase of the scatterer itself.SAR interferometry yields the image of the differences of the phases takenin two successive passes.
FERRETTI, ALESSANDRO, MONTI-GUARNIERI, ANDREA VIRGILIO, PRATI, CLAUDIO MARIA, ROCCA, FABIO   +3 more
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SAR interferometry and statistical topography

IEEE Transactions on Geoscience and Remote Sensing, 2002
The paper introduces a parametric model for the power spectrum density of synthetic aperture radar (SAR) interferograms. This model is derived by assuming the interferogram as a stationary frequency-modulated process and by exploiting the statistical description of earth topography provided by multifractal fields. Despite the small number of parameters
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Airborne polarimetric SAR interferometry

IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174), 1998
The authors show for first time the applicability of polarimetric interferometry techniques on high resolution interferometric scattering matrix airborne data. They point out the main requirements considering system hardware as well as data processing and calibration algorithms which are important for the polarimetric interferometric data evaluation ...
Papathanassiou, Konstantinos, Reigber, A., Scheiber, R., Horn, R., Moreira, A., Cloude, S.R.   +5 more
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Despeckling of interferometrie SAR data

2016 International Conference on Systems, Signals and Image Processing (IWSSIP), 2016
This paper presents speckle noise removal from synthetic aperture radar data. A novelty in this paper is removing of speckle noise using complex valued SAR data using optimal dual based l1 analysis approach. Paper presents complex valued computation of optimal dual frame l1 analysis using quasi Newton approach.
Dusan Gleich, Peter Planinsic
openaire   +1 more source

The wavenumber shift in SAR interferometry

IEEE Transactions on Geoscience and Remote Sensing, 1994
SAR surveys from separate passes show relative shifts of the ground wavenumber spectra that depend on the local slope and the off-nadir angle. The authors discuss the exploitation of this spectral shift for different applications: 1) generation of "low noise" interferograms benefiting phase unwrapping, 2) generation of quick-look interferograms, 3 ...
F. GATELLI, MONTI-GUARNIERI, ANDREA VIRGILIO, F. PARIZZI, P. PASQUALI, PRATI, CLAUDIO MARIA, ROCCA, FABIO   +5 more
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Ultra-wideband SAR interferometry

IEEE Transactions on Geoscience and Remote Sensing, 1998
The authors introduce ultra-wideband synthetic aperture radar (SAR) interferometry as a new technique for topographic height retrieval. It is based on using a SAR system with large relative bandwidth that acquires data along two parallel tracks with a separation of the same order of magnitude as the flight altitude.
Lars M. H. Ulander, Per-Olov Frölind
openaire   +1 more source

Multiresolution phase unwrapping for SAR interferometry

IEEE Transactions on Geoscience and Remote Sensing, 1999
An approach to two-dimensional (2D) phase unwrapping for synthetic aperture radar (SAR) interferometry is presented, based on separate steps of coarse phase and fine phase estimation. A technique called adaptive multiresolution is introduced for local fringe frequency estimation, in which difference frequencies between resolution levels are estimated ...
Davidson, Gordon, Bamler, Richard
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Multilook APES for multibaseline SAR interferometry

IEEE Transactions on Signal Processing, 2002
We extend the amplitude and phase estimation (APES) adaptive filter of Stoica et al. (see IEEE Signal Processing Lett., vol.6, p.205-206, Aug. 1999 and IEEE Trans. Signal Processing, vol.48, p.338-52, Feb2000.) to the multiple look scenario. Several important radar and sonar applications can benefit from the new multilook APES filter. The properties of
GINI, FULVIO, LOMBARDINI, FABRIZIO
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DEM by Ground-Based SAR Interferometry

IEEE Geoscience and Remote Sensing Letters, 2007
In this letter, a ground-based synthetic aperture radar (SAR) interferometer was used to generate digital elevation maps (DEMs) of the illuminated area. With respect to other ground-based data processing techniques, here, the effect of the propagation through the atmosphere is considered.
Linhsia Noferini, Massimiliano Pieraccini, Daniele Mecatti, Giovanni Macaluso, Guido Luzi, Carlo Atzeni   +5 more
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Evaluation of interpolation kernels for SAR interferometry

IEEE Transactions on Geoscience and Remote Sensing, 1999
Interpolation is required in interferometric synthetic aperture radar (SAR) processing for coregistration of complex signals. Straightforward system theoretical considerations provide objective figures of merit for interpolators, such as interferometric decorrelation and phase noise.
Ramon F. Hanssen, Richard Bamler
openaire   +2 more sources