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  • News - Thematic area articles

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    How satellite data empower sustainable urban growth

    Earth observation is a vital tool for facilitating the sustainable development of the world's cities, helping to ensure that urban centres keep spurring collaboration, innovation and opportunity as they continue to expand.

  • News - Thematic area articles

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    How satellite data help to shape society

    Data from ESA’s Earth observation archives are improving understanding of the interactions between human activities and the environment, helping to power green economic development and boosting prosperity in Europe and beyond.

  • Data - Data Description

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    Vision-1 full archive and tasking

    Vision-1 provides very high resolution optical products, with 87cm resolution in Panchromatic mode and 3.48m in Multispectral Mode. Products are in DIMAP format; the image is in GeoTiff format with 16 bit encoding; the applied geographical projection is WGS84 UTM. Spectral band combination options: Panchromatic (PAN): includes data contained within a single high resolution black and white band, with product pixel size of 0.87m Multispectral (MS4): includes four multispectral (colour) bands: Blue, Green, Red and Near Infrared. The product pixel size is 3.48m Bundle (BUN): provides both the 4-band multispectral, and the panchromatic data from the same acquisition in a single, non-merged product. Data is provided as 16-bit GeoTiffs with pixel sizes of 3.48m and 0.87m for MS and PAN data respectively Pansharpened (PSH): single higher resolution 0.87 colour product obtained by the combination of the visual coloured information of the multispectral data with the details provided in the panchromatic data. Two different geometric processing levels are: Projected (level 2): The product is mapped onto the Earth cartographic system using a standard reference datum and projection system at a constant terrestrial altitude, relative to the reference ellipsoid. By default, the map projection system is WGS84/UTM. The image is georeferenced without the application of a Digital Elevation Model (DEM) and supplied with the RPC model file. Pansharpened are not available as projected product Standard Ortho (level 3): georeferenced image in Earth geometry, including the application of a Airbus World DEM for Ortho and GCPs (using Airbus Intelligence One Atlas BaseMap as reference). The orthorectification procedure eliminates the perspective effect on the ground (excluding buildings) to restore the geometry of a vertical shot. Only the basic radiometric processing is available providing the radiance value.

  • Event - Workshop

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    Fringe 2003 Workshop

    The third ESA International Workshop on ERS SAR Interferometry and its first Workshop on ASAR interferometry: Advances in SAR interferometry from ERS and Envisat missions.

  • News - Infographics

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    An overview of ESA's Third Party Missions programme

    ESA’s Third Party Missions programme consists of almost 50 satellite missions, which are owned by organisations around the world. ESA has agreements with these organisations to acquire, process, and distribute data from their missions

  • Data - Data Description

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    GeoEye-1 ESA archive

    The GeoEye-1 archive collection consists of GeoEye-1 products requested by ESA supported projects over their areas of interest around the world. The dataset regularly grows as ESA collects new products over the years. Panchromatic (up to 40 cm resolution) and 4-Bands (up to 1.65 m resolution) products are available. The 4-Bands includes various options such as Multispectral (separate channel for Blue, Green, Red, NIR1), Pan-sharpened (Blue, Green, Red, NIR1), Bundle (separate bands for PAN, Blue, Green, Red, NIR1), Natural Colour (pan-sharpened Blue, Green, Red), Coloured Infrared (pan-sharpened Green, Red, NIR1) The processing levels are: STANDARD (2A): normalised for topographic relief View Ready Standard (OR2A): ready for orthorectification View Ready Stereo: collected in-track for stereo viewing and manipulation Map-Ready (Ortho) 1:12,000 Orthorectified: additional processing unnecessary Spatial coverage: Check the spatial coverage of the collection on a map available on the Third Party Missions Dissemination Service. The following table summarises the offered product types EO-SIP product type Band Combination Description GIS_4B__2A 4-Band (4B) 4-Band Standard/ 4-Band Ortho Ready Standard GIS_4B__MP 4-Band (4B) 4-Band Map Scale Ortho GIS_4B__OR 4-Band (4B) 4-Band Ortho Ready Stereo GIS_PAN_2A Panchromatic (PAN) Panchromatic Standard/ Panchromatic Ortho Ready Standard GIS_PAN_MP Panchromatic (PAN) Panchromatic Map Scale Ortho GIS_PAN_OR Panchromatic (PAN) Panchromatic Ortho Ready Stereo

  • Document - Conference Presentation - Poster

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    6_TROUVE_polinsar_2013_hybrid.pdf

    Hybrid PolInSAR: High resolution & Polarimetry Applied to Urban N. Trouve [ONERA - France]

  • Document - Conference Presentation - Poster

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    5_polinsar_Koeniguer.pdf

    PolSARAP: Investigating the Benefits of Polarimetry for Urban Applications using X-Band SAR Images E. Koeniguer [ONERA - France]

  • Document - Conference Presentation - Poster

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    4_POLinSAR2013_Ban_KTH.pdf

    Multitemporal RADARSAT-2 Fine-Beam Polarimetric SAR for Urban Land Cover Mapping Y. Ban [KTH Royal Institute of Technology - Sweden]

  • Data - Data Description

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    ICEYE full archive and tasking

    ICEYE full archive and new tasking products are available in Strip, Spot, SLEA (Spot Extended Area) and Scan modes, Complex (SLC) and Amplitude (GRD) processing levels: Strip instrument mode: the ground swath is illuminated with a continuous sequence of pulses while the antenna beam is fixed in its orientation. This results in a long image strip parallel to the flight direction: the transmitted pulse bandwidth is adjusted to always achieve a ground range resolution of 3 m. Spot instrument mode: the radar beam is steered to illuminate a fixed point to increase the illumination time, resulting in an extended Synthetic aperture length, which improves the azimuth resolution. Spot mode uses a 300 MHz pulse bandwidth and provides a slant plane image with a resolution of 0.5 m (range) by 0.25 m (azimuth); when translated into the ground, the products has 1 m resolution covering an area of 5 km x 5 km. Due to multi-looking, speckle noise is significantly reduced As an evolution of Spot mode, SLEA (Spot Extended Area) products are available with the same resolution of Spot data but a scene size of 15 km x 15 km Scan Instrument mode: the phased array antenna is used to create multiple beams in the elevation direction which allows to acquire a large area (100km x 100km) with resolution better than 15m. To achieve the finest image quality of its Scan image, ICEYE employs a TOPSAR technique, which brings major benefits over the quality of the images obtained with conventional SCANSAR imaging. With the 2-dimensional electronic beam steering, TOPSAR ensures the maximum radar power distribution in the scene, providing uniform image quality. Two different processing levels can be requested: Single Look Complex (SLC): Single Look Complex (SLC) Level 1a products consist of focused SAR data geo-referenced using orbit and attitude data from the satellite and the scenes are stored in the satellite's native image acquisition geometry which is the slant-range-by-azimuth imaging plane and with zero-Doppler SAR coordinates. The pixels are spaced equidistant in azimuth and in slant range. The products include a single look in each dimension using the full transmit signal bandwidth and consist of complex magnitude value samples preserving both amplitude and phase information. No radiometric artefacts induced by spatial resampling or geocoding. The product is provided in Hierarchical Data Format (HDF5) plus a xml file with selected metadata. Ground Range Detected (GRD): Ground Range Detected (GRD) Level 1b products consist of focused SAR data that has been detected, multi-looked and projected to ground range using an Earth ellipsoid model. The image coordinates are oriented along the flight direction and along the ground range. Pixel values represent detected magnitude, the phase information is lost. The resulting product has approximately square spatial resolution pixels and square pixel spacing with reduced speckle due to the multi-look processing at the cost of worse spatial resolution. No image rotation to a map coordinate system has been performed and interpolation artefacts are thus avoided. The product is provided in GeoTiff plus a xml file with selected metadata.    Strip Spot SLEA Scan Ground range resolution (GRD) 3 m 1 m 1 m 15 m Ground azimuth resolution (GRD) 3 m 1 m 1 m 15 m Slant range resolution (SLC) 0.5 m - 2.5 m 0.5 m 0.5 m   Slant azimuth resolution (SLC) 3 m 0.25 m 1 m   Scene size (W x L) 30 x 50 km2 5 x 5 km2 15 x 15 km2 100 x 100 km2 Incident angle 15 - 30° 20 - 35° 20 - 35° 21 - 29° Polarisation VV All details about the data provision, data access conditions and quota assignment procedure are described in the ICEYE Terms of Applicability. In addition, ICEYE has released a public catalogue that contains nearly 18,000 thumbnails under a creative common license of radar images acquired with ICEYE's SAR satellite constellation all around the world from 2019 until October 2020. Access to the catalogue requires registration.

  • Data - Data Description

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    WorldView-2 European Cities

    ESA, in collaboration with European Space Imaging, has collected this WorldView-2 dataset covering the most populated areas in Europe at 40 cm resolution. The products have been acquired between July 2010 and July 2015. Spatial coverage: Check the spatial coverage of the collection on a map available on the Third Party Missions Dissemination Service.

  • Data - Data Description

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    Pleiades ESA archive

    The Pleiades ESA archive is a dataset of Pleiades-1A and 1B products that ESA collected over the years. The dataset regularly grows as ESA collects new Pleiades products. Pleiades Primary and Ortho products can be available in the following modes: Panchromatic image at 0.5 m resolution Pansharpened colour image at 0.5 m resolution Multispectral image in 4 spectral bands at 2 m resolution Bundle (0.5 m panchromatic image + 2 m multispectral image) Spatial coverage: Check the spatial coverage of the collection on a map available on the Third Party Missions Dissemination Service. 

  • Data - Data Description

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    GeoEye-1 full archive and tasking

    GeoEye-1 high resolution optical products are available as part of the Maxar Standard Satellite Imagery products from the QuickBird, WorldView-1/-2/-3/-4 and GeoEye-1 satellites. All details about the data provision, data access conditions and quota assignment procedure are described into the Terms of Applicability available in Resources section. In particular, GeoEye-1 offers archive and tasking panchromatic products up to 0.41 m GSD resolution and Multispectral products up to 1.65 m GSD resolution. Band Combination Data Processing Level Resolutions Panchromatic and 4-bands Standard (2A) / View Ready Standard (OR2A) 15 cm HD, 30 cm HD, 30 cm, 40 cm, 50/60 cm View Ready Stereo 30 cm, 40 cm, 50/60 cm Map-Ready (Ortho) 1:12,000 Orthorectified 15 cm HD, 30 cm HD, 30 cm, 40 cm, 50/60 cm   The options for 4-Bands are the following: 4-Band Multispectral (BLUE, GREEN, RED, NIR1) 4-Band Pan-sharpened (BLUE, GREEN, RED, NIR1) 4-Band Bundle (PAN, BLUE, GREEN, RED, NIR1) 3-Bands Natural Colour (pan-sharpened BLUE, GREEN, RED) 3-Band Colored Infrared (pan-sharpened GREEN, RED, NIR1) Native 30 cm and 50/60 cm resolution products are processed with MAXAR HD Technology to generate respectively the 15 cm HD and 30 cm HD products the initial special resolution (GSD) is unchanged but the HD technique increases the number of pixels and improves the visual clarity achieving aesthetically refined imagery with precise edges and well-reconstructed details.

  • Mission - Third Party Missions

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    ICEYE

    The ICEYE constellation consists of 16 small and agile SAR satellites and enables all-weather Earth observation.

  • Document - Conference Presentation - Poster

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    POLinSAR2013_land_applications_RoundTable.pdf

    Round Table - Applications of SAR Polarimetry on Land: Agriculture, Urban, Archaeology

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