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  • All Categories (214)
  • Data (2)
  • Tools (1)
  • Documents (211)
  • Data - Announcement of Opportunity (Restrained)

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    Announcement of Opportunity for S3VT (Sentinel-3 Validation Team)

    In the framework of a Copernicus collaborative agreement ESA and EUMETSAT invite interested groups and individuals to support the Sentinel-3 Validation Team (S3VT).

  • Tools - Apps

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    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.

  • Document - General Reference

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    GOCE-Facts-and-Figures.pdf

    This fact sheet gives a quick and complete overview of the GOCEmission.

  • Document - Proceedings

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    2nd-International-GOCE-User-Workshop.pdf

    This document describes the proceedings of the 2nd International GOCE User workshop held at the ESA-ESRIN Site, Frascati, Italy, 8-10 March 2004.

  • Data - Fast Registration with immediate access (Open)

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    ERS PRARE Precise Orbit Product (ERS.ORB.POD/ERS.ORB/PRC)

    The precise orbit results from a data reduction process in which all available tracking data (Single-Lens Reflex, radar altimeter crossovers, PRARE range and Doppler data) and most accurate correction, transformation and dynamical models are taken into account and in which high level numerical procedures are applied. These orbits are "optimal" achievable representations of the real orbital motion under the circumstances of tracking situation and the "state of the art" model situation. The precise orbit product for the ERS satellites are the satellite ephemeris (position and velocity vector) including time tag, given in a well-defined reference frame, together with the nominal satellite attitude information and a radial orbit correction. Several orbit solutions are currently distributed: A new set of ORB POD (Precise Orbit Determination - REAPER v2) computed with the most updated model standards for the complete ERS-1 and ERS-2 mission. A previous set of ORB POD (REAPER v1) data already available on the ESA dissemination site since 2014, covering the ERS-1 full mission and the ERS-2 mission up to July 2003. ORB PRC which is the original Precise Orbit dataset computed during the ERS mission operations for ERS-1 and ERS-2. In the new POD dataset (REAPER v2) for the ERS-1 and ERS-2 missions, two different orbit solutions are provided together with the combined solution to be used for processing of the radar altimeter measurements and the determination of geodetic/geophysical products: those computed by DEOS (Delft Institute of Earth Observation and Space Systems), and those generated by ESOC (European Space Operations Centre) using different software (GEODYN and NAPEOS respectively). Careful evaluation of the various solutions of REAPER v2 has shown that the DEOS solution for both ERS-1 and ERS-2 has the best performance and is recommended to be used as reference. See the ERS Orbit Validation Report. For the previous version of the POD data set (REAPER v1), with ERS-2 mission data only up to 2003, three different orbit solutions together with the combined solution are available. These precise orbits for ERS-1 and ERS-2 have been computed at DEOS, ESOC, and GFZ (Deutschen GeoForschungsZentrums) using different software and different altimeter databases. Combined solutions have been created using three individual solutions for each satellite. All orbits were derived using consistent models in the same LPOD2005 terrestrial reference frame. These new orbit solutions show notable improvement with respect to DGME04 orbits (Scharroo and Visser, 1998). Thus, RMS crossover differences of new orbits improved by 4-9 mm. Careful evaluation of the various solutions has shown that the combined solution for both ERS-1 and ERS-2 has the best performance. All POD orbit files (REAPER v1/v2) are available in SP3c format.

  • Document - Software Verification Plan/Report

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    GUT-Tutorial.pdf

    The objective of the GUT tutorial, together with the GUT Algorithm Description and User Guide (RD3), is to assist you in getting acquainted with the GOCE User Toolbox, whose objective is to help you take major benefit from the GOCE data for your own application.

  • Document - Software Verification Plan/Report

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    An-assessment-of-ERS-SAR-Low-Resolution-Imagery.pdf

    The objective of this technical note is to describe and to analyse the various concepts associated with the ERS SAR low resolution imagery. This study is done in order to evaluate a range of products, to consider the trade-offs involved in product specification and to propose some recommendations fro low resolution imagery of quality suitable for a broad range of potential applications.

  • Document - Software Verification Plan/Report

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    An-investigation-of-the-error-characteristics-of-the-GOCE-geoid-models.pdf

    This report presents an initial investigation into the error characteristics of the GOCE gravity field models as they are realised in the calculated geoid anomalies.

  • Document - Proceedings

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    4th-International-GOCE-User-Workshop.pdf

    Proceedings of the 4th International GOCE User Workshop held on 31 March - 1 April 2011 at the Technische Universitat Munich, Germany

  • Document - Proceedings

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    GOCE-ESAs-first-Earth-Explorer-Core-Mission.pdf

    This paper introduces the first ESA Core Earth Explorer mission,GOCE, in the context of ESA's Living Planet programme.

  • Document - General Reference

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    Earth-Explorers.pdf

    This flyer gives a quick overview of the 6 Earth Explorers missions.

  • Document - General Reference

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    ESAs-Schwerkraft-Mission-GOCE.pdf

    This brochure, in German language, gives an introduction to the Gravity Field and Steady-State Ocean Circulation Mission GOCE, an Earth Explorer Core mission due for launch in 2006. GOCE is intended to provide the unique data set required to formulate global and regional models of the Earth's gravity field and the geoid (its reference equipotential surface) to high spatial resolution and accuracy.

  • Document - General Reference

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    GOCEs-Measurements-of-the-Gravity-Field-and-Beyond.pdf

    This is an article extracted from the ESA Bulletin Nr. 133.

  • Document - General Reference

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    GOCE-One-of-ESAs-Most-Challenging-Missions-Yet-A-Foreword.pdf

    This article is extracted from ESA Bulletin Nr. 133.

  • Document - General Reference

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    GOCE-ESAs-Gravity-Mission-flyer.pdf

    This flyer gives quick information on the ESA Gravity Field andsteady-state Ocean Circulation Explorer (GOCE) mission.

  • Document - Proceedings

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    Abstracts-of-2nd-International-GOCE-User-Workshop.pdf

    This volume collects the abstracts of the papers presented at the GOCE User Workshop, held on 8-10 March 2004 at ESA ESRIN, Frascati Italy.

  • Document - General Reference

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    Understanding our Planet - the Earth Observation Envelope Program

    This brochure describes the Earth Observation Envelope Programme.

  • Document - General Reference

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    A-Jewel-in-ESAs-Crown-GOCE-and-its-Gravity-Measurement-Systems.pdf

    This article is extracted from ESA Bulletin Nr. 133

  • Document - General Reference

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    The Nine Candidate Earth Explorer Missions - Gravity Field and Steady-State Ocean Circulation Mission

    This report for assessment addresses the Earth Explorer Gravity Field and Steady-State Ocean Circulation (GOCE) mission at the time when it was selected with other 9 Earth Explorer missions as potential candidate for Phase A study.

  • Document - General Reference

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    GOCE-Obtaining-a-Portrait-of-Earths-Most-Intimate-Features.pdf

    This is an article extracted from the ESA Bulletin Nr. 133.