We present a Differential Synthetic Aperture Radar Interferometry (DInSAR) technique for generating displacement maps and deformation time-series by exploiting the SAR data acquired by the ERS and ENVISAT/ASAR systems. The proposed approach extends the Small Baseline Subset (SBAS) algorithm and is based on an easy but effective combination of ERS/ERS and ENVISAT/ENVISAT multilook interferograms...

ENVISAT/ ASAR interferometry is a useful tool for the retrieval of geoand bio-physical parameters. In this paper the aim is show the quality of interferometric ENVISAT/ ASAR products. This objective will be approached in two ways. First, the timing accuracy of various ENVISAT/ ASAR products is evaluated. The geometric calibration and validation includes the determination of slant-range and azim...

In the frame of operational remote sensing based National Crop Monitoring and Production Forecast Program (CROPMON) the Remote Sensing Center of Institute of Geodesy, Cartography and Remote Sensing, (FÖMI RSC) provided nation-wide crop production forecasts. The technology of CROPMON served as the background of disaster monitoring. The achieved results of ESA–FÖMI Prodex-ENVISAT R&D project demo...

Nearly three years of Envisat altimetric observations over ocean are available in Geophysical Data Record (GDR) products. The quality assessment of these data is routinely performed at the CLS Space Oceanography Division in the frame of the CNES Segment Sol Altimétrie et Orbitographie (SSALTO) and ESA French Processing and Archiving Center (F-PAC) activities. This paper presents the main result...

Nowadays, spaceborne Synthetic Aperture Radar (SAR) has become a powerful tool for providing significant wave height (SWH). Traditionally, validation of SAR derived SWH has been carried out against buoy measurements or model outputs, which only yield an inter-comparison, but not an “absolute” validation. In this study, the triple collocation error model has been introduced in the validation of ...

In this paper, we present algorithms for automatic detection of oil spills in SAR images. The algorithms have been trained on a large number of ERS, RADARSAT and ENVISAT images. The performance of the algorithms are compared to manual and semi-automatic approaches in a benchmark study involving 32 RADARSAT images and 28 ENVISAT ASAR images from 2003. Our algorithm performed well both on RADARSA...

Since the launch of ENVISAT satellite in 2002, the Radar Altimetry Mission provides systematic altimeter observations of the Earth surface. The ENVISAT Geophysical Data Records products contain, over all type of surfaces, altimeter ranges derived from four specialized retrackers: Ocean, Ice-1, Ice-2 and Sea-Ice retracker. Among the different goals of the ENVISAT Mission, one directly concerns l...

The phase time series of a point-wise Permanent Scatterer shows an additional phase shift passing from ERS to ENVISAT. This shift depends both on the existing 30MHz frequency shift between ERS and ENVISAT and on the location of the PS within the slant range resolution cell. The phase shift changes from one PS to another, but it is constant for all the ENVISAT images and is called "location phas...

This paper summarizes the first results on interferometric ENVISAT/ ASAR image mode products [1]. We analyzed timing and geometric accuracy as well as the phase of a first interferogram from an IS2 image mode data set (VV polarized). According to the schedule the image mode products of this beam products are the first to be validated [2]. This interferogram is one of the first ENVISAT/ ASAR int...