earth online
  • All Categories (62)
  • Data (6)
  • News (22)
  • Missions (1)
  • Events (22)
  • Tools (4)
  • Activities (3)
  • Documents (4)
  • Event - Conference

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    15 Years of Progress in Radar Altimetry Symposium

    A Symposium on "15 Years of Progress in Radar Altimetry" and the annual meeting of the Ocean Surface Topography Science Team, the International Doris Service Workshop and the ARGO Workshop.

  • Event - Training

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    2nd Advanced Training Course on Ocean Remote Sensing 2009

    This advanced training course focused on ocean remote sensing theory and applications.

  • Event - Training

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    3rd Advanced Training Course on Land Remote Sensing 2011

    This 2011 advanced ESA training course focused on land remote sensing theory and applications.

  • Event - Conference

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    3rd ERS Symposium

    The ESA Directorate for Observation of the Earth and its Environment held the 3rd ERS Symposium, in 1997, where many of the results from the ERS-1 and ERS-2 missions were presented and discussed by the scientific community.

  • Event - Training

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    4th Advanced Training Course in Land Remote Sensing

    ESA organised the 4th Advanced Training Course in Land Remote Sensing which took place in Athens, Greece from 1 to 5 July 2013

  • Document - Conference Presentation - Poster

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    9_POLinSAR2013_raimadoya.pdf

    MRV System Development for REDD+ in Indonesia: Pol-SAR Application M. Raimadoya [Bogor Agricultural University - Indonesia]

  • Event - Training

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    Advanced Training Course in Land Remote Sensing 2012

    The 2012 advanced training course focused on land remote sensing theory and applications.

  • Event - Training

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    Advanced Training Course in Ocean Remote Sensing 2011

    Within the framework of the Dragon Programme, a joint collaboration between the European Space Agency (ESA) and the Chinese Ministry of Science and Technology (MOST), ESA and NRSCC are providing a series of advanced thematic training courses on remote sensing applications hosted by university and research institutions in P.R. China.

  • Event - Training

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    Advanced Training Course on Ocean Remote Sensing 2006

    The objective of the course was to provide first-hand information on a broad range of ocean research topics including key principles of SAR, Radar Altimetry, Ocean Colour and Sea Surface Temperature measurements, processing algorithms, data products and their use in oceanographic applications.

  • News - Events and Proceedings

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    Data preservation takes centre stage at Living Planet Symposium

    Against the backdrop of the famed Rhine River, world-class scientists and Earth observation data-users are gathered this week in the historical city of Bonn, at the Living Planet Symposium (LPS).

  • News - Success Stories

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    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.

  • Activity - Projects

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    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.

  • Activity - Projects

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    Dragon Cooperation Programme

    The Dragon Programme focussed on science and applications development in China using mainly data from the ERS and Envisat missions. The Prgramme was a cooperation between ESA and the National Remote Sensing Centre of China.

  • Document - Newsletter

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    Earth Online Newsletter - 08 March 2024

    This issue of the Earth Online Newsletter covers a selection of the latest news and events from ESA.

  • Mission - Heritage Missions

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    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.

  • Data - EO Sign In Authentication (Open)

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    Envisat ASAR Global Monitoring L1 [ASA_GM1_1P]

    This product has been generated from Level 0 data collected when the instrument was in Global Monitoring Mode. One product covers a full orbit. The product includes slant range to ground range corrections. This strip-line product is the standard for ASAR Global Monitoring Mode. It is processed to approximately 1 km resolution using the SPECAN algorithm. The swath width is approximately 400 km. The ASAR GM L0 full mission data archive has been bulk processed to Level 1 (ASA_GM1_1P) in Envisat format with the IPF-ASAR processor Version 6.03. Spatial Resolution: 1 km ground range x 1 km azimuth.

  • Data - EO Sign In Authentication (Open)

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    Envisat ASAR IM Medium Resolution L1 [ASA_IMM_1P]

    This ASAR Medium Resolution strip-line product has been generated from Level 0 data collected when the instrument was in Image Mode. This product has lower resolution but higher radiometric resolution than the ASA_IMP. It is intended to perform applications-oriented analysis on large scale phenomena and multi-temporal imaging. This product provides a continuation of the ERS-SAR Image Mode data. The ASAR IM L0 full mission data archive has been bulk processed to Level 1 (ASA_IMM_1P) in Envisat format with the IPF-ASAR processor Version 6.03. Spatial Resolution: 150 m ground range x 150 m azimuth.

  • Data - EO Sign In Authentication (Open)

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    Envisat ASAR IM Precision L1 [ASA_IMP_1P]

    This is a multi-look, ground range, digital Precision Image generated from Level 0 data collected when the instrument was in Image Mode (7 possible swaths HH or VV polarisation). The product includes slant range to ground range correction. It is for users wishing to perform applications-oriented analysis and applies to multi-temporal imaging and to derive backscattering coefficients. The stand-alone image is generated using the Range/Doppler algorithm. The processing uses up to date (at time of processing) auxiliary parameters corrected for antenna elevation gain, and range spreading loss. Engineering corrections and relative calibration are applied to compensate for well-understood sources of system variability. Absolute calibration parameters, when available (depending on external calibration activities) are provided in the product annotations. This product provides a continuation of the ERS-SAR_PRI product. Spatial Resolution: 30 m ground range x 30 m azimuth.

  • Data - EO Sign In Authentication (Open)

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    Envisat ASAR IM Single Look Complex L1 [ASA_IMS_1P]

    This data product represents a single-look, complex, slant-range, digital image generated from Level 0 ASAR data collected when the instrument is in Image Mode. Seven possible swaths in HH or VV polarisation are available. The product is primarily intended for use in SAR quality assessment and calibration or applications requiring complex SAR images such as interferometry, and can be used to derive higher level products. The spatial coverage is about 100 km along track per 56 - 100 km across track, and the radiometric resolution is 1 look in azimuth, 1 look in range. The file size is 741 Mbytes. It is worth highlighting that Azimuth pixel spacing depends on Earth-Satellite relative velocity and actual PRF and slant range pixel spacing is given by ASAR sampling frequency (19.208 Mhz). Auxiliary data include: Orbit state vector, Time correlation parameters, Main Processing parameters ADS, Doppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, Geolocation Grid ADS, SQ ADS. Spatial Resolution: Approximately 8m slant range x approximately 4m azimuth.

  • Data - EO Sign In Authentication (Open)

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    Envisat ASAR WS Medium Resolution L1 [ASA_WSM_1P]

    The strip-line product has been generated from Level 0 data collected when the instrument was in Wide Swath Mode. The product includes slant range to ground range corrections and covers a continuous area along the imaging swath. It is intended to perform application oriented analysis on large scale phenomena over a wide region and for multi-temporal imaging. This is the standard product for ASAR Wide Swath Mode. The ASAR WS L0 full mission data archive has been bulk processed to Level 1 (ASA_WSM_1P) in Envisat format with the IPF-ASAR processor Version 6.03. Spatial Resolution: 150 m slant range x 150 m azimuth.