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ESA UNCLASSIFIED - For Official Use
ESA Ground Segment
Paul McNamara (for Uwe Lammers)Joint NLST/SST meetingBaltimore, August 2018
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
Science Ground Segment (SGS)
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The Science Ground Segment of LISA consists of:- Mission Operations Centre (MOC)- Science Operations Centre (SOC)- Consortium Data Processing Centre (DPC)- Data Computing Centres (DCC)
Relevant Documents:- Science Operations Assumptions Document (SOAD)
- End April- Science Management Plan (SMP)
- Phase B1- Science Implementation Requirements Document
(SIRD)- Science Implementation Plans (SIPs)
S/C
GroundStations
MOC
SOC
Uplink
Downlink
Events handling
ATEL
Users
DPC
Science Operations Ground Segment
Mission Operations Ground Segment
Table caption :
Event Notice
PreliminaryEventNotices
Ops request
Telecommands
Telecommands Telemetry
Telemetry
Raw & L0
L1L2
& L3
Data products
IOT L0
Ops requests
Calibrationfiles
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
Mission Operations Centre (MOC)
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The role of the MOC is to “fly” the satellites- They are responsible for all telecommands sent to the satellites, be it for spacecraft or instrument controlMOC are also responsible for collecting and consolidating the full telemetry streamConsolidated telemetry is made available to the SOC ~2 hours after the end of the ground station pass- We will work with the MOC to try to minimise this delay
- By 2034, the Mission Control System should be more advanced than it is today!
During the commissioning, calibration and early operations, the SOC and Instrument Operations Teams will be located at the MOC- Same as was done for LPF, which proved to be essential in
the success of the mission
MOC is located at ESOC in Darmstadt, Germany
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
Science Operations Centre (SOC)
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The Science Operations Centre’s role is to operate the science instrumentDuring nominal and extended operations, the SOC is the single point of contact between the Consortium/science community and LISA The role of the SOC is to ensure the optimal operation of the instrument, including any routine calibration activities- e.g. LPF science operations-like activitiesThe SOC is also responsible for the delivery of all data from the constellation to the DPC and eventually science community
The SOC is located at ESAC in Madrid, Spain
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
Science Operations Ground Segment elements
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MOC
Science Operations Centre
ATEL
Data Processing Centre
Transient Events
Consolidation
Science Planning
Team
Data Processing
Team
UsersUser Support
Instruments Operations
TeamsArchive
DCC DCC
DCC DCC
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
LISA Science Operations Ground Segment - Uplink
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MOC
Science Operations Centre
ATEL
Data Processing Centre
Operational requests
Transient Events
Consolidation
Science Planning
Team
Data Processing
Team
Users
Instruments & Calibration Ops requests
User Support
Instruments Operations
TeamsArchive
SOC unique point of contactwith MOC for uplink
DCC DCC
DCC DCC
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
SOGS : Downlink
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MOC
Science Operations Centre
ATEL
Data Processing Centre
Raw & Level 0 data
L1 data L2 & L3 data
Transient Events
Consolidation
Science Planning
Team
Data Processing
Team
Users
Calibration files
User Support
Instruments Operations
Teams
L0 data
Archive
L1 data
L0 data
Instruments & Calibration Ops requests
SOC unique point of contactwith MOC for downlink
DCC DCC
DCC DCC
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
LISA SOGS : Data distribution
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MOC
Science Operations Centre
ATEL
Data Processing Centre
Transient Events
Consolidation
Science Planning
Team
Data Processing
Team
Users
Data products (L1, L2, L3)
User Support
Questions & answers
Instruments Operations
TeamsArchive
SOC responsible fordistribution of dataproducts
DCC DCC
DCC DCC
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
LISA SOGS : Transient Events
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MOC
Science Operations Centre
ATEL
Data Processing Centre
Event Notices
Preliminary Event Notices
Transient Events
Consolidation
Science Planning
Team
Data Processing
Team
UsersUser Support
Instruments Operations
TeamsArchive
SOC responsible forsending Event Notices
DCC DCC
DCC DCC
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
LISA SOGS : Archive
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MOC
Science Operations Centre
ATEL
Data Processing Centre
Raw & Level 0 data
L1 data L2 & L3 data
Transient Events
Consolidation
Science Planning
Team
Data Processing
Team
UsersUser Support
Instruments Operations
Teams
L0 data
Archive
SOC Operational Archiveconnecting all Ground Segment actors
SOC Legacy Archivecontinuation of SOCOperational Archive
Data products (L1, L2, L3)
DCC DCC
DCC DCC
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
LISA SOGS : All interfaces
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MOC
Science Operations Centre
ATEL
Data Processing Centre
Event Notices
Preliminary Event Notices
Operational requests
Raw & Level 0 data
L1 data L2 & L3 data
Transient Events
Consolidation
Science Planning
Team
Data Processing
Team
Users
Instruments & Calibration Ops requests
Calibration files
User Support
Questions & answers
Instruments Operations
Teams
L0 data
Archive
L1 data
L0 data Data products (L1, L2, L3)
DCC DCC
DCC DCC
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
Data levels
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Currently we foresee the following levels of data:- Level 0: Raw data, in engineering format, from the satellite
- i.e. the data delivered from MOC to SOC- Level 1: Data has been “cleaned” and TDI algorithm has been implemented
- Data cleaning and TDI will be agreed and jointly developed with the DPC- Level 1 data will be available to the science community from the archive after the proprietary period
- Level 2: GW source parameter estimation with residuals- DPC produce Level 2 data- Level 2 data only makes sense in the case of separate source identification pipelines
- Does not make sense if global fit is employed by DPC- Level 3: GW source catalogue
- DPC produce Level 3 data
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
Mission Phases
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Study Phase
Development
LEOP + Cruise
Commissioning
Calibration and Performance Verification Phase
Science Phase (Nominal and Extended)
Post Ops
→Adoption
→Launch
→IOCR
→End of Operations
→End of Mission
Responsibility in ESA
SCI-F (ESTEC)
SCI-P (ESTEC)
SCI-O (ESAC)
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
During the Development Phase
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Principle of “smooth transition”- To use the same tools as during the operational phase (e.g. Archive, Data processing, payload monitoring tools)
Ground Segment Tests- System Operations Validation Tests (SOVTs) campaign involving all actors (ESOC, SOC, IOT, DPC and Project)- 13 SOVTs for LPF (with increasing complexity)
Building up of the IOT- The Instrument Operations Team will need to start preparing for operations before all the Payload HW is delivered (e.g. tools
and procedures for payload monitoring and calibration)
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
During the Commissioning Phase
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Instrument Teams at ESOC
Instrument Teams have direct interface with MOC for Uplink (via Project)
Manual commanding to the S/C
SOC is operational and provides Telemetry to Instrument Teams
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
During the Calib. & Performance Verification Phase
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Interfaces identical to the Nominal Science Phase
Instrument Teams and SOC at ESOC
Timeline driven operations
Calibration: to find the optimum setup for all satellite operations
Performance Verification: to use the observatory as during the Nominal Science Phase to confirm overall system is ready
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
During the Nominal Science Phase
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Instrument Teams and SOC relocated at home institutes and ESAC respectively, with regular meetings
In case of anomalies :- Instrument Teams support called as needed-Commissioning/CPV setup can be required
Transient Events : when generation of the “Preliminary Event Notices” is stable enough, it could be run in the SOC to decrease turn-around time
Data Re-processing-Regeneration of TDI’d data (L1)-This is expected to take place several times, requiring all data analysis to be re-run!
ESA UNCLASSIFIED - For Official Use
European Space Agency
e
Joint SST/NLST | 27-29/08/2018 | Slide
During the Post Operational Phase
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Generation of the ultimate payload calibration for final re-processing
Generation of the ultimate data products for Legacy Archive