431 Hits in 7.0 sec

Power Spectra of Very High Resolution SAR Amplitude Images of Urban Areas

Gerardo Di Martino, Antonio Iodice, Daniele Riccio, Giuseppe Ruello
2014 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
Index Terms-Synthetic Aperture Radar (SAR), urban areas, power spectrum, very high resolution, parameter retrieval.  ...  With the launch of COSMO/SkyMed and TerraSAR-X missions, very high resolution (VHR) Synthetic Aperture Radar (SAR) images of urban areas have become routinely available.  ...  In recent years, the launch of COSMO/SkyMed and TerraSAR-X missions has made very high resolution (VHR) SAR images of urban areas routinely available: in particular, a resolution even better than one meter  ... 
doi:10.1109/jstars.2014.2311174 fatcat:cjlfwiowx5a27ltkimk62ahahu

Fractal based filtering of SAR images

Gerardo Di Martino, Antonio Iodice, Daniele Riccio, Giuseppe Ruello, Ivana Zinno
2010 2010 IEEE International Geoscience and Remote Sensing Symposium  
In fact, the availability of very high resolution data calls for a change in the analysis and elaboration approach of microwave images of both urban areas (where the development of techniques for the extraction  ...  TerraSAR-X and COSMO-SkyMed are providing SAR data with the remarkable resolution of 1 x 1 m 2 in the high resolution spotlight operational mode.  ...  In fact, the availability of very high resolution data calls for a change in the analysis and elaboration approach of microwave images of both urban areas (where the development of techniques for the extraction  ... 
doi:10.1109/igarss.2010.5649157 dblp:conf/igarss/MartinoIRRZ10 fatcat:o4pimtwjt5cctmkgwultrfqoka

Detection and classification of urban structures based on high-resolution SAR imagery

A. Reigber, M. Jager, W. He, L. Ferro-Famil, O. Hellwich
2007 2007 Urban Remote Sensing Joint Event  
In this paper, several advanced methods for detecting and classifying urban structures in high-resolution SAR imagery are presented.  ...  As a third approach, a simple but powerful operator for detecting urban structures by analysing texture inhomogeneity in SAR images is developed.  ...  The authors wish to thank GeoForschungsZentrum Potsdam (GFZ) for supplying the data of the Dresden test-site.  ... 
doi:10.1109/urs.2007.371819 fatcat:gwxpercpkffqnammveahsoneom

SAR image post-processing for the estimation of fractal parameters

Gerardo Di Martino, Daniele Riccio, Giuseppe Ruello, Ivana Zinno
2011 SAR Image Analysis, Modeling, and Techniques XI  
The fractal parameters extraction is based on the estimation of the power spectral density of the SAR amplitude image.  ...  In the last section of the paper, the application of the introduced processing to high resolution SAR images is presented, with the relevant maps of the fractal dimension and of the increment standard  ...  The spectral amplitude of the SAR image PSD (Power Spectral Density), (see Eq.  ... 
doi:10.1117/12.898265 dblp:conf/sar/MartinoRRZ11 fatcat:6b6n4bfcunflhlaydgdcplh6ty

Spectral processing for the extraction of fractal parameters from SAR data

Gerardo Di Martino, Giorgio Franceschetti, Daniele Riccio, Ivana Zinno
2011 2011 17th International Conference on Digital Signal Processing (DSP)  
The retrieving is based on the estimation of the power spectrum of the SAR amplitude image.  ...  In this paper a fractal based processing for the analysis of SAR images of natural surfaces is presented. Its definition is based on a complete direct imaging model developed by the authors.  ...  Application to simulated SAR images cuts-out of 50x50 pixels In order to apply our processing to actual SAR images, we have to deal with the problem of analyzing very small areas in which the fractal parameters  ... 
doi:10.1109/icdsp.2011.6005020 fatcat:xlyvt67pefbbda6p6ucm6ljxsu

On the fractal nature of volcano morphology detected via SAR image analysis: the case of Somma—Vesuvius Volcanic Complex

Gerardo Di Martino, Antonio Iodice, Daniele Riccio, Giuseppe Ruello, Ivana Zinno
2012 European Journal of Remote Sensing  
A theoretical framework for the analysis of the SAR imaging process is outlined.  ...  An algorithm founded on this imaging model is presented, allowing the retrieving of the point by point fractal dimension of the imaged surface.  ...  Resolution SAR Images" and within COSMO/SkyMed AO, project: "Exploitation of fractal scattering models for COSMO-SkyMed images interpretation".  ... 
doi:10.5721/eujrs20124517 fatcat:sp3crvixfjb3lnw5n7eppiosxa

Time series of SAR image fractal maps

I. Zinno, C. De Luca, G. Di Martino, A. Iodice, M. Manzo, A. Pepe, S. Pepe, D. Riccio, G. Ruello, E. Sansosti, P. Tizzani
2013 2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS  
In this paper the analysis of time series of fractal dimension maps generated from multi-pass SAR images is dealt with.  ...  The objective is twofold: on the one hand such an analysis is addressed to assess the performance of the algorithm for the fractal dimension estimation from a single SAR image, i.e., to verify the fractal  ...  In particular, dealing with power-law spectra, an appropriate spectral estimator, that minimizes high variance and leakage problems, is used: the Capon estimator [13] .  ... 
doi:10.1109/igarss.2013.6723698 dblp:conf/igarss/ZinnoLMIMPPRRST13 fatcat:juor2lnvhnf3lgebl3uxor6cda

Unambiguous Imaging of Static Scenes and Moving Targets with the First Chinese Dual-Channel Spaceborne SAR Sensor

Tingting Jin, Xiaolan Qiu, Donghui Hu, Chibiao Ding
2017 Sensors  
Multichannel synthetic aperture radar (SAR) is a breakthrough given the inherent limitation between high-resolution and wide-swath (HRWS) faced with conventional SAR.  ...  This paper aims to obtain unambiguous imaging of static scenes and moving targets with the first Chinese dual-channel spaceborne SAR sensor.  ...  Acknowledgments: This work was jointly supported by the National Science Foundation of China under Grant No. 61331017.  ... 
doi:10.3390/s17081709 pmid:28757573 pmcid:PMC5579761 fatcat:kx7az2vcynbpxhuzbm5qase7vu

Change detection in urban scenes by fusion of SAR and hyperspectral data

Dirk Borghys, Michal Shimoni, Christiaan Perneel, Manfred Ehlers, Ulrich Michel
2007 Remote Sensing for Environmental Monitoring, GIS Applications, and Geology VII  
In the current paper the authors fused information gathered using a hyperspectral sensor with that of high-resolution polarimetric SAR data.  ...  The urban scene is characterized by a very high complexity, containing objects formed from different types of man-made materials as well as natural vegetation.  ...  ACKNOWLEDGEMENTS The research presented in this paper is the result of a study funded by the Belgian MoD on the semi-automatic use of hyperspectral and SAR images for general security problems (project  ... 
doi:10.1117/12.738767 fatcat:t26onts6zzgwpfazgosyvmymdq

Superresolution Differential Tomography: Experiments on Identification of Multiple Scatterers in Spaceborne SAR Data

Fabrizio Lombardini, Matteo Pardini
2012 IEEE Transactions on Geoscience and Remote Sensing  
Interest is growing in the application of coherent processing of synthetic aperture radar (SAR) data to the monitoring of complex urban or infrastructure areas.  ...  Experiments have been carried out with real C-band spaceborne data over urban areas; corresponding results are shown and discussed.  ...  Fornaro from IREA-CNR (Italy) for furnishing the calibrated real data and the differential SAR interferometry measures for the comparisons, for the useful discussions, and for the support in geocoding.  ... 
doi:10.1109/tgrs.2011.2164925 fatcat:gnwlsqbobbbvhhvclhsol2idum

The Role of Resolution in the Estimation of Fractal Dimension Maps From SAR Data

Gerardo Di Martino, Antonio Iodice, Daniele Riccio, Giuseppe Ruello, Ivana Zinno
2017 Remote Sensing  
In turn, the combination of fractal dimension maps obtained from stripmap and spotlight images can be used to identify areas on the scene presenting non-fractal behavior (e.g., urban areas).  ...  The study is performed using a data set of actual Cosmo/SkyMed Synthetic Aperture Radar (SAR) images relevant to two different areas, the region of Bidi in Burkina Faso and the city of Naples in Italy,  ...  and Project 2218 "Use of high resolution SAR data for water resource management in semi-arid regions."  ... 
doi:10.3390/rs10010009 fatcat:rrno5loig5b77krdiwi2xzn7aa

A Stationary Wavelet-Domain Wiener Filter for Correlated Speckle

S. Solbo, T. Eltoft
2008 IEEE Transactions on Geoscience and Remote Sensing  
The SWW filter is unbiased and shows good performance in despeckling synthetic aperture radar (SAR) images. It smooths homogeneous areas while preserving textured areas and point scatterers.  ...  We assume that both the speckle-free image and the speckle contribution have spatial correlations and utilize well-established models for the power density spectrum of the radar cross section to estimate  ...  Larsen of Norut for processing the SAR data into SLC form raw data. The RADARSAT SAR data are copyright of the Canadian Space Agency.  ... 
doi:10.1109/tgrs.2007.912718 fatcat:grgmwwrtqfgprkhon6vemb6hxm

Angle Independence Properties of Fractal Dimension Maps Estimated From SAR Data

Gerardo Di Martino, Antonio Iodice, Daniele Riccio, Giuseppe Ruello, Ivana Zinno
2013 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
very useful in information extraction and SAR post-processing techniques and, on the other hand, the different fractal dimension maps behavior whereas urban areas are analyzed.  ...  The behavior of the fractal dimension maps at different look angles is discussed for both natural and urban scenarios and emphasis is also posed on areas within the same image that, according to the scene  ...  Therefore, the filter minimizes out-of-band power and has been chosen to overcome the leakage and high variance problems which rise when facing the estimation of power law spectra, as detailed in [13]  ... 
doi:10.1109/jstars.2013.2248134 fatcat:umzsga47xjc6phb3xrv3vud3mu

Very High Resolution Spaceborne SAR Tomography in Urban Environment

Xiao Xiang Zhu, Richard Bamler
2010 IEEE Transactions on Geoscience and Remote Sensing  
The new class of meter-resolution spaceborne SAR systems (TerraSAR-X and COSMO-Skymed) offers a tremendous improvement in tomographic reconstruction of urban areas and man-made infrastructure.  ...  First 3-D and 4-D reconstructions of an entire building complex (including its radar reflectivity) with very high level of detail from spaceborne SAR data by pixelwise TomoSAR are presented.  ...  Adam of DLR for supporting the data preprocessing.  ... 
doi:10.1109/tgrs.2010.2050487 fatcat:2cmueyvsfvdkpjrrpwlvv2eeg4

Damage Detection Using High-Resolution SAR Imagery in the 2009 L'Aquila, Italy, Earthquake

Pralhad Uprety, Fumio Yamazaki, Fabio Dell'Acqua
2013 Earthquake spectra  
Building damage detection for the 6 April 2009 L'Aquila, Italy, earthquake was conducted using high-resolution TerraSAR-X images obtained before and after the event.  ...  Based on the study, building damage could be observed in an urban setting of L'Aquila with overall accuracy of 89.8% and Kappa coefficient of 0.45.  ...  ACKNOWLEDGMENTS The TerraSAR-X images used in this study were made available from SAR Application Research Committee, organized by PASCO Corporation, Tokyo, Japan.  ... 
doi:10.1193/060211eqs126m fatcat:yxgwys2mfzgc3ho7bwfpwsmi7q
« Previous Showing results 1 — 15 out of 431 results