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Browse through mission documentation and reports, and learn more about European Space Agency Earth Observation projects and opportunities.

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  • Document - Product Document

    11 May 2021

    Document - Product Document

    mkl3_product_handbook_is1r0.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    11 May 2021

    Document - Product Document

    IDEAS+-VEG-OQC-REP-2742_ASAR_Medium_Resolution_Bulk_Processing_QC_Report_v1.3.pdf

    QC Report for ASAR Medium Resolution Products processed under the DSI Bulk Processing Campaign

  • Document - Technical Note

    11 May 2021

    Document - Technical Note

    REVIEW OF THE IMPACT OF ERS-2 PILOTING MODES ON THE SAR DOPPLER STABILITY

    ERS-2 was piloted in yaw-steering mode using three gyroscopes since the beginning of the mission until February 2000, when a new yaw-steering mode using only one gyroscope was implemented. The ERS-2 gyroscopes had experienced several problems during the mission and the new mono-gyro mode (1GP) was intended to ensure the mission continuity even in case of additional failures. In January 2001 a new test piloting mode using no gyroscopes, the Extra-Backup Mode (EBM), was implemented as a first stage of a gyro-less piloting mode. The aim of this challenging mode was to maintain the remaining gyroscopes performance only for those activities absolutely requiring them, such as some orbit manoeuvres. A more accurate version of this yaw-steering zerogyro mode (ZGM) was operationally used since June 2001 and the performance was further improved with the implementation of the Yaw Control Monitoring mode (YCM) at the beginning of 2002. The evolution from the nominal and extremely stable three-gyro piloting mode (3GP) to the YCM has allowed to successfully continuing the ERS-2 operations despite of the gyroscopes failures. Nevertheless, this evolution has significantly affected the stability of the satellite attitude and the SAR Doppler Centroid frequency. The scope of this paper is to provide an overview of the different ERS-2 piloting modes and to assess their impact on the platform attitude, the SAR Doppler stability, the product quality and the applications performance, particularly for interferometry.

  • Document - Product Document

    11 May 2021

    Document - Product Document

    Gobron_SP615.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    11 May 2021

    Document - Product Document

    mgvi_demo_level3_description.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    11 May 2021

    Document - Product Document

    pinty_etal_ies_2002.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    11 May 2021

    Document - Product Document

    L3-ENV-MER-PFS-ESA-ACR-03.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    11 May 2021

    Document - Product Document

    L3-ENV-MER-PFS-ESA-ACR-01.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    11 May 2021

    Document - Product Document

    L3-ENV-MER-PFS-ESA-ACR-02.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    11 May 2021

    Document - Product Document

    GPS-MERIS-WV.pdf

    Envisat Meris Level 3 Demonstration Products

  • Document - Product Document

    4 May 2021

    Document - Product Document

    ENVISAT_AATSR_consolidated_Level-0_dataset_completeness.pdf

    This document reports on the completeness of the AATSR consolidated Level 0 dataset. The analysis was performed by IDEAS and includes recommendations for building a clean and complete consolidated Level 0 dataset for reprocessing campaigns

  • Document - Product Document

    28 Apr 2021

    Document - Product Document

    Envisat-MIPAS-products-availability.pdf

    This document contains Envisat MIPAS products availability

  • Document - User Guide, Product Document

    1 Feb 2021

    Document - User Guide, Product Document

    ASAR-OTF-user-manual.pdf

    This document describes the (A)SAR On-The-Fly Data Dissemination and Processing Service, which provides access to data from the ERS and Envisat missions.

  • Document - Technical Note

    27 Jan 2021

    Document - Technical Note

    Orbit-Evolution-of-the-Swarm-Mission.pdf

    This presentation describes the historical and predicted evolution of the Swarm mission orbit.

  • Document - Product Specifications

    10 Dec 2020

    Document - Product Specifications

    ENVISAT-1-PRODUCTS-SPECIFICATIONS-Vol11-Meris-6a.pdf

    This document contains the MERIS Product Specifications

  • Document - Product Document

    4 Dec 2020

    Document - Product Document

    AATSR-Level-2-ATS_AR__2P-Product-Quality-Readme-Information.pdf

    This file presents the Product Quality Readme (PQR) information for the AATSR Level 2 ATS_AR__2P products.

  • Document - Product Readme Note

    4 Dec 2020

    Document - Product Readme Note

    AATSR-Level-2-ATS-NR-2P-Product-Quality-Readme-Information.pdf

    This file presents the Product Quality Readme (PQR) information for the AATSR Level 2 ATS_NR__2P products.

  • Document - Product Document

    4 Dec 2020

    Document - Product Document

    DORIS-and-Orbit-Products.pdf

    DORIS and Orbit Products document

  • Document - Product Document

    2 Dec 2020

    Document - Product Document

    Review-impact-ERS-2-Piloting-Modes-SAR-Doppler-Stability26-miranda.pdf

    This document is a review of the impact of ERS-2 piloting modes on the SAR doppler stability

  • Document - Product Readme Note

    2 Dec 2020

    Document - Product Readme Note

    AATSR-Level1b-Product-Quality-Readme-Information-README.pdf

    This file presents the Product Quality Readme (PQR) information for the AATSR Level 1b (ATS_TOA_1P) products.