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The International Charter “space and major disasters” (referred as the Charter) aims at providing a unified system of space data acquisition and delivery to those affected by natural or man-made disasters through Authorized Users. Each member agency has committed resources to support the provisions of the Charter and thus is helping to mitigate the effects of disasters on human life and property....
This paper describes a novel remote sensing technique for deformation monitoring. This system consists of two parts: a set of radio beacons and a telemetering receiver. The radio beacons are installed apart on the large structure. These beacons have the same carrier modulated by the same PN codes with different delays that exceed one chip period. The distance between any two PN codes is unique so...
Within the framework of preparatory studies for future Earth Observation (EO) missions such as ARCTOS, the CNES requires a technical vision of spectral band usefulness, and in particular the benefits of including Short Wave Infrared channels (SWIR) in future Very High Resolution (VHR) optical sensors. Involved in the definition of such systems and in the thematic testing of simulated future and recent...
Before the occurrence of the landslide, there's always some micro displacement. This paper puts forward a novel kind of landslide monitoring system based on the spread-spectrum continuous wave radar. This system consists of two parts: corner reflector and radar instrument. The continuous carrier signal is modulated by pseudo noise code and radiated to the corner reflector and then returned to the...
There is an urgent need within the international remote sensing community to establish a metadata standard for field spectroscopy that ensures high quality, interoperable metadata sets that can be archived and shared efficiently within Earth observation data sharing systems. Careful examination of all stages of metadata collection and analysis can inform a robust standard that is applicable to a range...
In the frame of the Italian Space Agency (ASI) Hyperspectral Space Mission PRISMA, the Istituto Nazionale di Geofisica e Vulcanologia coordinates the scientific project ASI-AGI aimed to develop specific algorithms and products for geophysical applications. Data validation and calibration activities have been focused on active volcanic areas and three test sites have been selected in Sicily, Italy...
The TerraSAR-X satellite has been fully operational since nearly 6 years and has delivered a very large quantity of high resolution SAR images. Among these images one can find a number of repeated acquisitions of selected target areas taken with nearly identical imaging parameters. These image time series data often cover the full seasonal cycle of a target area and lend themselves well to small-scale...
Remote sensors capture large scenes that are conventionally split in smaller patches before being stored and analyzed. Traditionally, this has been done by dividing the scene in rectangular windows. Such windowing methodology could provoke the separation of spectrally homogeneous areas or objects of interest into two or more patches. This is due to the presence of objects of interest in correspondence...
This paper describes an image patch characterization for image information mining tasks. An image patch is first decomposed into a multi-scale segmentation thanks to the Max Tree representation. Then, each segment is described by shift invariant shape attributes. Finally, the segment attributes are aggregated into a shape distribution which constitutes the patch characterization. Illustrations of...
At half-meter resolution the earth's surface has roughly 600 Trillion pixels. The need to process satellite imagery at such enormous scales for automated semantic categorization and the requirement to repeat this process at time-stipulated intervals demand optimal strategies to scan, extract, and, represent image features for accurate land-cover detection. In this paper we focus on developing optimal...
In this paper, we propose a polarimetric TomoSAR method with Wiener-SVD inversion and Gerschgorin Disks for different scattering mechanisms of each point. Seven images of RADARSAT-2 Fine Quad Mode have been used to validate the efficiency of the proposed method. The polarimetric analysis shows that more scattering points can be detected by the composition of different polarimetric bands, thus retrieving...
Focusing moving targets with Normalized Relative Speed (NRS)for bistatic synthetic aperture radar (SAR) is discussed in this paper. The discussion concentrates on azimuth-invariant bistatic geometry. The focusing approach for azimuth-invariant bistatic geometry is derived analytically. The validity of the proposed approach for other bistatic geometry like azimuth-variant is also investigated.
This paper introduces a new compact polarimetric (CP) three-component decomposition scheme, which can overcome the overestimation of volume scattering power in urban areas to a certain extent. For CP three-component decomposition, degree of polarization (DoP) is one of the key parameters, and directly influences the effectiveness of the decomposition method proposed in [1]. To overcome the overestimation...
Due to left/right Doppler ambiguity, and the small difference in Doppler frequencies of adjacent points in flight direction, conventional monostatic SAR can not be used for forward-looking imaging. Then bistatic SAR with transmitter and receiver mounted on different platforms is coming into the eyes of researchers. In this paper, the feasibility of forward-looking imaging using airborne bistatic SAR...
The aim of this work is to show two possible applications for Alternating Bistatic TanDEM-X data. The first application is a tomographic processing while the second is a 2D ship velocity estimation. Results over real data are presented for both applications.
This paper presents the fusion of monostatic repeat-pass and bistatic single-pass SAR data in complex urban environments to improve the results of stacking techniques such as Persistent Scatterer Interferometry (PSI). Addition of a few motion-free and atmosphere-free TanDEM-X data pairs to the existing TerraSAR-X data stack can improve the 3D positioning and deformation monitoring of objects. However,...
The aim of this analysis is to develop a subspace detection technique using a hybrid approach which combines nonlinear feature extraction and feature selection for the task of hyperspectral image classification. In the proposed approach Kernel Principal Component Analysis (KPCA) is applied at the first step to generate the new features from the original data. Then pixel based spatial correlation is...
It is an important problem in remote sensing that using limited observing points acquire the maximum quantity of building information. In this paper, a building information acquisition (BIA) model based on Support Vector Machine (SVM) is proposed for quantitative description of the mathematical relationship between the information quantity acquisition and the observing angles, which is optimized to...
In this paper, the effects of prediction uncertainty of grain size fractions on intertidal surface sediments classification are investigated. The grain size fractions are compositional data, so the characteristics of the compositional data should be considered during spatial prediction. For efficient compositional data analysis, an additive log-ratio transformation is considered in this paper. Through...
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