ESA s Payload Data Handling and Preservation

Transcription

1 ESA s Payload Data Handling and Preservation Damiano Guerrucci, Joost van Bemmelen, Roberto Biasutti, Jose Antonio Rodriquez Vazquez, Stefano Tatoni, Andrea Schedid Bruno Schmitt, Nicola Lorusso, Jon Earl ESAW June2017 ESOC, Darmstadt Germany ESA UNCLASSIFIED - For Official Use

2 Overview Introduction Earth Observation Data Disseminated Managed Missions Payload Data Ground Segment (PDGS) Mission Main Elements Deployment Strategy Success Stories Data Handling Integration of Services and Components Modern Data Dissemination Conclusion ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 2

3 Earth Observation Data Disseminated by ESA ESA disseminates Earth observation (EO) products and auxiliary data from a number of missions and instruments: ESA EO Live and Heritage Missions Third Party Missions (TPMs) ESA Campaigns the Copernicus Space Component (CSC) ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 3

4 ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 4

5 ESA Earth Observation ERS and Envisat Heritage ESA's two European Remote Sensing (ERS) satellites, ERS-1 and 2, were launched into the same orbit in 1991 and 1995 respectively. Their payloads included a synthetic aperture imaging radar, radar altimeter and instruments to measure ocean surface temperature and wind fields. ERS-2 added an additional sensor for atmospheric ozone monitoring. The ERS-1 mission ended on 10 March 2000 and ERS-2 was retired on 05 September Envisat was ESA's successor to ERS. Envisat was launched in 2002 with 10 instruments aboard and at eight tons is the largest civilian Earth observation mission. More advanced imaging radar, radar altimeter and temperature-measuring radiometer instruments extend ERS data sets. This was supplemented by new instruments including a medium-resolution spectrometer sensitive to both land features and ocean colour. Envisat also carried two atmospheric sensors monitoring trace gases. The Envisat mission ended on 08 April 2012, following the unexpected loss of contact with the satellite. ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 5

6 ESA Earth Explorers Core Missions Past The Gravity field and steady-state Ocean Circulation Explorer was launched on and ended on GOCE provided high spatial resolution gravitygradient data to improve global and regional models of Earth's gravity field and geoid. Next The prime aim of the Atmospheric Dynamics Mission is to demonstrate measurements of vertical wind profiles from space. The mission employs a highperformance Doppler wind lidar based on direct-detection interferometric techniques. ADM-Aeolus is scheduled for launch at in January Earth Clouds Aerosols and Radiation Explorer (EarthCARE) will improve the representation and understanding of Earth's radiative balance in climate and numerical forecast models. The Biomass mission will provide information about the state of our forests and how they are changing. Carrying the first P-band synthetic aperture radar in space, Biomass will provide measurements to determine the amount of biomass and carbon stored in forests, thereby improving our understanding of the carbon cycle. ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 6

7 ESA Earth Explorers Opportunity Missions Flying The Soil Moisture and Ocean Salinity (SMOS) mission, launched on , is exploiting an innovative two-dimensional interferometer to acquire brightness temperature observations at L-band (1.4 GHz). These observations translate into information on the moisture held in soil and salinity in the surface layers of the oceans, which are needed to further our understanding of Earth's water cycle. Launched on , is measuring fluctuations in the thickness of ice on both land and sea determine how Earth's ice is changing. This information is leading to a better understanding of the relationship between ice and global climate. CryoSat carries an innovative SAR/interferometric radar altimeter. Launched on , SWARM is providing the best-ever survey of the geomagnetic field and its temporal evolution. The geomagnetic models resulting from the mission will provide new insights into Earth s interior. This information will lead to a better understanding of atmospheric processes, and also have practical applications in areas such as space weather and radiation hazards. Future The Fluorescence Explorer (FLEX) will map vegetation fluorescence to quantify photosynthetic activity. This information will improve our understanding of the way carbon moves between plants and the atmosphere and how photosynthesis affects the carbon and water cycles. It will also lead to better insight into plant health and stress. ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 7

8 ESA s Third Party Missions ESA uses its multi-mission ground systems to acquire, process, archive and distribute data from other satellites - so called Third Party Missions. The data from these missions is distributed under specific agreements with the owners or operators of the mission, following the ESA Data Policy. ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 8

9 PDGS Elements External Data Provider / Processing Ground Station Planning Facility Flight Operations Segment (FOS) Preservation Processing Facility Calibration and Data Quality Facility Reprocessing Dissemination Facility Users community User Service Monitoring and Control Facility PDGS ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 9

10 PDGS Deployment Strategy Implementing mission PDGSs on a per mission basis Multi mission system by interconnecting customised generic subsystems Generic services elements integrated into one managed service process A balanced utilisation of above models to: Reduce insourcing Removing dependencies Lower cost Standardised interfaces Reuse of knowledge Modularity different by missions ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 10

11 PDGS Generic Services Model Generic services are delivering following operational functions: Mission management & planning Data ingestion Data processing Data re-processing Data preservation Data quality control Data Circulation Product dissemination Users management Ground Segment Monitoring Statistics and reporting Catalogue management ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 11

12 Success stories - Data Handling - Third Party Mission Data Handling Facility (DHF) - Integration of services Preservation Element Front End (PEFE) - Modern data dissemination - ALOS PDGS migration ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 12

13 TPM-DHF Functional Overview The TPM DHF is a PDGS facility consisting of: Data Reception and Circulation Data Conversion (products repackaging) Catalogue Simple catalogue function to users and exposed interface for external catalogues Online Access (HTTP and FTP) Bulk Dissemination for large quantities of stored data ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 13

14 PEFE, single front end to the preservation element The PE-FE forms part of an end-to-end chain for a MISSION, and is shared resource across multiple MISSIONs, i.e. Cryosat-2, SMOS, SWARM, GOSAT, OceanSat-2 Circulation of systematically produced data from the MISSION distribution system to the archival service within the preservation element. Reverse circulation of the Preservation Confirmation Report from the Preservation Element to the MISSION monitoring system. Support for the Data Repatriation flow from the Preservation Element to the MISSION distribution system. ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 14 14

15 ALOS JAXA s Advanced Land Observing Satellite The ALOS Data European Node (ADEN) Ground Segment, managed by ESA, provided the European and African regional elements for the Japanese remote sensing satellite ALOS (Jan 2006 May 2011). The other nodes were under the responsibility of NOAA, AUSLIG and NASDA. At the end of the ALOS satellite operations, the ADEN facilities (Tromsoe, Matera and ESRIN) had more than 800 TB of data coming from the 2 ALOS optical sensors (AVNIR-2 and PRISM) and from the ALOS radar sensor (PALSAR). The data were processed only under user request to the higher levels. In 2014 there was the need to update the ALOS processors in order to be aligned to JAXA ones. In order to reduce the maintenance cost of the ALOS ground segment (and considering that most of the original PDGS was not used anymore in phase F), it has been decided to migrate it from Mission Specific (ADEN) to the Generic Ground Segment. A data repatriation from the centres was performed, followed by a consolidation exercise. More than 50,000 segments were successfully archived. ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 15

16 ALOS Migration to generic PDGS Data downlinked from mission, converted to EO-SIP (OGC standard compliant) and ingested for dissemination The user can download optical and radar data from the same platform. ALOS optical data (AVNIR-2, PRISM) were systematically processed and controlled. They will be available this year for immediate download as geo-corrected (Lv1.C) ALOS radar data, are available at different processing levels, via On-The-Fly (OTF) processing: starting from PALSAR (FBS, FBD, PLR and WB1 modes) RAW data (Lv.1.0) the system automatically generated Lv. 1.1 (SLC) and 1.5 (PRI - radiometrically and geometrically corrected). Optical request Data Access (on line) Product Data Catalogue Data Processing (PFM for FBD, FBS, PLR) ESA PALSAR processor PALSAR request Data Access (virtual) Authentication (EO-SSO) On the fly dynamic processing Data Processing (PFM for WB1) ESA PALSAR processor ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 16

17 Conclusions Migration to a common dissemination infrastructure has been performed with the following goals: - reduce the number of elements to maintain - reduce operational costs - improve data access timeliness Integration with common services has been beneficial for: - reduction of operational cost - streamlined processes - industrial policy ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 17

18 Contacts URLs: Contacts: - TPM Mission Operations Manager PDGS Common Services ESA and TPM PDGS Operations ESA UNCLASSIFIED - For Official Use ESA 31/05/2017 Slide 18