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During last years, several studies related to remote sensing technologies analyzed the processes to extract and classify slicks from SAR imagery. These images are used, among other purposes, for monitoring coastal and marine waters pollution where oil floating on the surface becomes visible because it damps the short gravity-capillary waves that are responsible for the radar backscattering [14].
InSAR interferogram quality assessment is a key step for the using of interferogram map. Traditionally, the interferogram is qualitatively assessed visually and quantitatively assessed by the number of residues. However, the important structure information is hardly quantifiable. This paper presents a novel index to evaluate the quality of InSAR interferogram based on connected area. After discomposing...
Range accuracy of synthetic aperture radar using modern satellites has been proven in centimeter-range after consideration of geodynamic, atmospheric effects and systematic errors; it is so-called Imaging Geodesy technique. Based on this technique, we have proposed the next-generation of Synthetic Aperture Radar (SAR) products and developed operational software SAR Geodesy Processor in the previous...
COSMO-SkyMed di Seconda Generazione is the second generation of the Italian infrastructure for satellite Earth Observation based on Synthetic Aperture Radars. Among the several improvements with respect to the first generation, CSG will feature a set of acquisition modes providing significant enhancements: • increased versatility in terms of different combinations of resolution and swath width; •...
This paper evaluates the applicability and achievable SAR accuracy for octahedrons - a combination of eight corner reflectors with a common phase centre. In an experiment at the observatory in Wettzell from July to November 2015 these cost-efficient and mobile radar targets were measured with TerraSAR-X Staring Spotlight and High-Resolution Spotlight. Applying the geodetic stereo SAR concept, octahedrons...
The widespread access to Synthetic Aperture Radar data has created a need for more precise ship extraction, specifically in low-to-medium resolution imagery. While Synthetic Aperture Radar pixel resolution is improving for a large swaths, information about ships from within the Synthetic Aperture Radar intensity imagery is still sparse. Ships that are a few pixels across provide little information...
The simple linear iterative clustering (SLIC) method is a popular recently proposed superpixel algorithm. However, it may provide bad superpixels for the synthetic aperture radar (SAR) images due to the influence of speckle and large dynamic range of pixel intensity. In this paper, an improved SLIC algorithm for SAR images is proposed by employing the probability density function (PDF) information...
We analyzed a large amount of high-resolution Synthetic Aperture Radar (SAR) data of exposed intertidal flats on the German North Sea coast with respect to the imaging of sediments, macrophytes, and mussels. TerraSAR-X and Radarsat-2 images of four test areas acquired from 2008 to 2013 form the basis for the present investigation and are used to demonstrate that pairs of SAR images, if combined through...
The converse beam cross sliding spotlight SAR (CBC sliding spotlight SAR) imaging processing was investigation in this essay. The geometry and properties of classical standard and inverse sliding spotlight SAR were reviewed and the CBC sliding spotlight SAR operation mode was concerned with unified sliding factor, both classical sliding spotlight SAR and CBC sliding spotlight SAR can be realized by...
The increasing interest in bistatic SAR missions and in the new opportunities they can create has led to the development during time of a new set of processing solutions, as wide as the possible configurations assumed by the involved satellites and the corresponding applications.
Baseline estimation is a necessary step in processing of InSAR. The theory of block adjustment is introduced in baseline estimation to reduce the needed number of ground control points (GCPs). The main disadvantage of the method is that it has to extract substantial tie points (TPs) in the overlapping areas. If all TP heights are seen as unknown parameters, the coefficient matrix in normal equation...
The COSMO-SkyMed infrastructure is an Italian asset developed to satisfy the national dual user needs and to enhance the Earth Observation Community capabilities. The infrastructure is composed by the Space Segment, the Ground Segment and of the Integrated Logistic Support and Operations Segment.
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