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News - Data Release news
FDR4ALT - ESA unveils new cutting-edge ERS/Envisat Altimeter and Microwave Radiometer Datasets
The European Space Agency (ESA) has developed a comprehensive suite of innovative Earth system data records as part of the Fundamental Data Records for Altimetry project - FDR4ALT.
Data - Sample Data (Open)
SkySat Sample Data
Download free SkySat sample datasets to preview products available for this mission.
News - Success Stories
ESA missions help to reveal worldwide lake water loss trend
Climate change, human consumption and sedimentation are depleting more than half of the world’s biggest lakes of water, according to a ground-breaking analysis that drew on three decades of satellite data.
News - Success Stories
Decades of satellite data reveal the risks of climate tipping points
Decades-long time series that draw on ESA’s Earth observation archives are enabling scientists to uncover the threat of sudden and potentially irreversible changes to the icy parts of the planet.
Data - Fast Registration with approval (Restrained)
SkySat ESA archive
The SkySat ESA archive collection consists of SkySat products requested by ESA supported projects over their areas of interest around the world and that ESA collected over the years. The dataset regularly grows as ESA collects new products. Two different product types are offered, Ground Sampling Distance at nadir up to 65 cm for panchromatic and up to 0.8m for multi-spectral. EO-SIP Product Type Product Description Content SSC_DEF_SC Basic and Ortho scene Level 1B 4-bands Analytic /DN Basic scene Level 1B 4-bands Panchromatic /DN Basic scene Level 1A 1-band Panchromatic DN Pre Sup resolution Basic scene Level 3B 3-bands Visual Ortho Scene Level 3B 4-bands Pansharpened Multispectral Ortho Scene Level 3B 4-bands Analytic/DN/SR Ortho Scene Level 3B 1-band Panchromatic /DN Ortho Scene SSC_DEF_CO Ortho Collect Visual 3-band Pansharpened Image Multispectral 4-band Pansharpened Image Multispectral 4-band Analytic/DN/SR Image (B, G, R, N) 1-band Panchromatic Image The Basic Scene product is uncalibrated, not radiometrically corrected for atmosphere or for any geometric distortions inherent in the imaging process: Analytic - unorthorectified, radiometrically corrected, multispectral BGRN Analytic DN - unorthorectified, multispectral BGRN Panchromatic - unorthorectified, radiometrically corrected, panchromatic (PAN) Panchromatic DN - unorthorectified, panchromatic (PAN) L1A Panchromatic DN - unorthorectified, pre-super resolution, panchromatic (PAN) The Ortho Scene product is sensor and geometrically corrected, and is projected to a cartographic map projection: Visual - orthorectified, pansharpened, and colour-corrected (using a colour curve) 3-band RGB Imagery Pansharpened Multispectral - orthorectified, pansharpened 4-band BGRN Imagery Analytic SR - orthorectified, multispectral BGRN. Atmospherically corrected Surface Reflectance product. Analytic - orthorectified, multispectral BGRN. Radiometric corrections applied to correct for any sensor artifacts and transformation to top-of-atmosphere radiance. Analytic DN - orthorectified, multispectral BGRN, uncalibrated digital number imagery product Radiometric corrections applied to correct for any sensor artifacts Panchromatic - orthorectified, radiometrically correct, panchromatic (PAN) Panchromatic DN - orthorectified, panchromatic (PAN), uncalibrated digital number imagery product The Ortho Collect product is created by composing SkySat Ortho Scenes along an imaging strip. The product may contain artifacts resulting from the composing process, particular offsets in areas of stitched source scenes. Spatial coverage: Check the spatial coverage of the collection on a map available on the Third Party Missions Dissemination Service. As per ESA policy, very high-resolution imagery of conflict areas cannot be provided.
News - Data Release news
PlanetScope and Skysat data available through ESA’s Third Party Missions Programme
Through ESA’s Third Party Missions Programme, researchers, scientists and companies from around the world can apply to access Planet’s high-frequency, high-resolution satellite data for non-commercial use.
News - Success Stories
Predicting crop yield using Planet data
The world’s population continues to grow, while the climate crisis is raising Earth’s temperatures and increasing the likelihood of extreme weather events – all of which affect food security.
News - Spotlight on EO community
Introducing Mirko Albani
In this short introduction, ESA's Heritage Missions Programme Manager describes what he likes most about ESA's long term archive of satellite mission data and his role in the programme.
Activity - Projects
Dragon 2 Cooperation Programme
The Dragon 2 Programme focussed on the exploitation of ESA, ESA's Third Party Missions and Chinese Earth observation data for science and applications development in land, ocean and atmospheric applications.
Tools - Apps
Heritage Missions app for iOS
Download the Heritage Missions application to discover what the missions were about, how it worked and what the elements of the space and ground segment that make these missions unique.
Tools - Apps
Heritage Missions app for Android
Download the Heritage Missions application to discover what the missions were about, how it worked and what the elements of the space and ground segment that make these missions unique.
Data - Project Proposal (Restrained)
SkySat Full Archive and New Tasking
The SkySat Level 2B Basic Scene, Level 3B Ortho Scene and Level 3B Consolidated full archive and new tasking products are available as part of Planet imagery offer. The SkySat Basic Scene product is uncalibrated and in a raw digital number format, not corrected for any geometric distortions inherent in the imaging process. Rational Polynomial Coefficients (RPCs) is provided to enable orthorectification by the user. Basic Scene Product Components and Format Processing Levels Analytic (unorthorectified, radiometrically corrected, multispectral BGRN) Analytic DN (unorthorectified, multispectral BGRN) Panchromatic DN (unorthorectified, panchromatic) Product Components and Format Image File (GeoTIFF format) Metadata File (JSON format) Rational Polynomial Coefficients (Text File) UDM File (GeoTIFF format) Image Configuration 4-band Analytic DN Image (Blue, Green, Red, NIR) 1-band Panchromatic DN Image (Pan) Ground Sampling Distance 3.7 m at nadir (average at reference altitude 475 km) Ground Sampling Distance (nadir) Panchromatic 0.86m and Multispectral 1.0m for SkySat-1&2 Panchromatic 0.65m and Multispectral 0.8m for SkySat-3 to 13 (0.72 m and 1.0m for data acquired before 30/06/2020) Accuracy <50 m RMSE The SkySat Ortho Scene is sensor- and geometrically-corrected (by using DEMs with a post spacing of between 30 and 90 meters) and is projected to a cartographic map projection; the accuracy of the product will vary from region to region based on available GCPs. Different products are available: The SkySat Visual Ortho Scene product is orthorectified, pansharpened, and color-corrected (using a color curve) 3-band RGB Imagery The SkySat Pansharpened Multispectral Scene product is orthorectified, pansharpened 4-band BGRN Imagery The SkySat Analytic DN Ortho Scene product is orthorectified, multispectral BGRN, uncalibrated, digital number imagery product. The product has been processed to remove distortions caused by terrain; It eliminates the perspective effect on the ground (not on buildings), restoring the geometry of a vertical shot. Transformation to at-sensor radiance is not included The SkySat Panchromatic DN Ortho Scene product is orthorectified, panchromatic, uncalibrated, digital number imagery product. It has a finer GSD than the Analytic Product. Transformation to at-sensor radiance is not included. The SkySat Analytic Ortho Scene are calibrated multispectral imagery products with radiometric corrections applied to correct for any sensor artifacts and transformation to top-of-atmosphere radiance. The SkySat Consolidated Product are Ortho Collect product created by composing ~60 SkySat Ortho Scenes (Visual, Pansharpened Multispectral, Analytic DN, Panchromatic DN) along an imaging strip into segments Ortho Scene Product Components and Format Visual Ortho Pansharpened Multispectral Analytic DN Ortho Panchromatic DN Ortho Analytic Ortho Product Components and Format Image File (GeoTIFF format) Metadata File (JSON format) Rational Polynomial Coefficients (Text File) UDM File (GeoTIFF format) Image File (GeoTIFF) Metadata File (JSON format) Rational Polynomial Coefficients (Text File) UDM File (GeoTIFF format) Image File (GeoTIFF format) Metadata File (JSON format) Rational Polynomial Coefficients (Text File) UDM File (GeoTIFF format) Image File (GeoTIFF format) Metadata File (JSON format) Rational Polynomial Coefficients (Text File) UDM File (GeoTIFF format) Image File (GeoTIFF format) Metadata File (JSON format) Rational Polynomial Coefficients (Text File) UDM File (GeoTIFF format) Image Configuration 3-band Pansharpened Image (PS Red, PS Green, PS Blue) 4-band Pansharpened Image (PS Blue, PS Green, PS Red, PS NIR) 4-band Analytic DN Image (B, G, R, N) 1-band Panchromatic Image 4-band Analytic Image (B, G, R, N) Ground Sampling Distance 50 cm 50 cm 50 cm 50 cm 50 cm Projection UTM WGS84 UTM WGS84 UTM WGS84 UTM WGS84 UTM WGS84 Accuracy <10 m RMSE <10 m RMSE <10 m RMSE <10 m RMSE radiometric accuracy: +/- 5% Relative accuracy at < 10 degrees off-nadir angle As per ESA policy, very high-resolution imagery of conflict areas cannot be provided.
Mission - Heritage Missions
Envisat
Envisat was ESA's successor to ERS. Envisat carried ten instruments aboard for a wide range of Earth observing fields. The mission was operational from 2002 to 2012.
News - Data Release news
PlanetScope and SkySat data now available
PlanetScope and SkySat missions under evaluation. Interested users can investigate suitability of the data for scientific and R&D activities.
Document - Proceedings
2004 Envisat and ERS Symposium
The 2004 Envisat and ERS Symposium was held in Salzburg - Austria from 6 to 10 September 2004. The 2004 Envisat and ERS Symposium provided a forum for investigators to present results of ongoing research project activities and assess the development of applications and services.
Mission - Third Party Missions
SkySat
SkySat is a constellation of high-resolution Earth imaging satellites from the commercial company Planet Labs.
Event - Training
3rd Advanced Training Course on Land Remote Sensing 2011
This 2011 advanced ESA training course focused on land remote sensing theory and applications.
Document - General Reference
Mapping-Forest-Fire-Damage-with-Envisat.pdf
This article was published in the ESA Bulletin Nr. 120 and describes how remote sensing from space (and ESA's ENVISAT environment satellite, launched in March 2002, in particular) is suitable for forest-fire-related studies.
Document - General Reference
Taking-the-Measure-of-Earth-Fifteen-Years-of-Progress-in-Radar-Altimetry.pdf
This article is extracted from ESA Bulletin Nr. 128.