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LPF Science Ground Segment. Paul McNamara LTP Data Analysis Meeting 19/20 February 2007. Summary. Introduction Operations Mission Timeline Ground Segment Overview Science Ops Ground Segment. Introduction . Missions within ESA have two “sides” Project (SCI-P) Science (SCI-S)

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Lpf science ground segment l.jpg

LPF Science Ground Segment

Paul McNamara

LTP Data Analysis Meeting

19/20 February 2007


Summary l.jpg
Summary

  • Introduction

  • Operations Mission Timeline

  • Ground Segment Overview

  • Science Ops Ground Segment


Introduction l.jpg
Introduction

  • Missions within ESA have two “sides”

    • Project (SCI-P)

    • Science (SCI-S)

  • SCI-P manages the project up to, and through, on-orbit commissioning

  • SCI-S takes control of the mission after commissioning, i.e. when instrument enters Science Phase

  • LPF Science Operations will be run through the Science and Technology Operations Center (STOC)

    • This will be managed by the Mission Manager/Project Scientist

  • The STOC is part of RSSD within ESA, and located at ESAC, Spain

  • Mission Operations (s/c health and safety, ground stations etc) are managed by ESOC


Operations mission timeline l.jpg
Operations Mission Timeline

T = L + 0

L + 16d

L + 50d

L + 66d

L + 94d

L + 184d

L + 244d

LTP Ops

DRS Ops

???

Despin

Orbit

Corr

IOOP

SCIENCE OPERATIONS

Transfer

Phase

Commiss-

ioning

LEOP

Launch

Separation

Project

STOC

LEOP = Launch and Early Orbit Phase (apogee raising)

IOOP = In-Orbit Operational Phase (Science Operations)


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Ground Segment Overview

  • The LPF Ground Segment consists of 3 parts:

    • The Operational Ground Segment (OGS)

    • The Science Ground Segment (SGS)

    • The interface to the Satellite Prime Contractor (Astrium UK)

  • The major tasks of the OGS is to perform satellite (payload and s/c) operations ensuring safety of the mission. It comprises:

    • The Ground Stations

    • The Mission Operations Centre (MOC) at ESOC

  • The Operational Ground Segment details can be found in the Ground Segment Management Plan (S2-EST-PL-5101)


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Interface with Prime (ASU)

  • The Prime Contractor will interface with LPF to:

    • Provide OGS, during Phase C/D, the required deliveries called for in the MIP

      • e.g. Satellite User Manual (SUM)

    • Support system validation and listen-in tests as required

    • Provide the SGS, during Phase C/D, with the required deliveries and specialist support concerning the DFACS

    • Provide Support during launch and satellite (s/c and payload) commissioning

    • Receive On-Board Software (OBSW) maintenance requests from MOC and/or STOC and provide MOC with end-to-end validated images/patches/ On-Board Control Procedures (OBCPs) to be uploaded to the satellite.


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Science Ground Segment

  • The major task of the SGS is to plan the utilisation and related configuration of the technology instruments on-board LPF, and derive from the mission products the science and technology results.

  • The SGS consists:

    • The Science and Technology Operations Centre (STOC)

      • Establish and maintain the Experiment Master Plan (EMP)

      • Derive from the EMP the run procedures

      • Perform monitoring of the technology instruments and DFACS during all phases of the mission

      • Perform Quick-look data analysis of the ICE telemetry

      • Perform full data analysis to extract science and technology results

      • Update TC parameters

      • Instigate branching of EMP in event of unexpected result

      • Archive all available data for later availability (i.e. as reference for LISA)

    • The LTP Contributors


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Science Operations Ground Segment

Ground Stations

LISA Pathfinder Mission Operations Centre

(LPF MOC)

-OBSM

-OBCP

Firewall

Mission Operations Center / DDS/ MUST

(ESOC)

  • - Mission planning

  • requests

  • Short and long term planning requests

  • -Updated

  • TC parameter

Firewall

  • Raw HK and s/c TM

  • Processed HK TM

  • -Command timeline

  • -Auxiliary data

  • DRS specific TM

  • LTP raw data

O/B S/W change

requests

STOC

(Incl Archive)

LPF Prime

Contractor

-Mission planning

requests

-Mission planning

requests

LTP

Co-Is

DRS

Raw and engineering payload

and s/c data

Raw and engineering payload

and s/c data

Internet


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Science Ground Segment

  • STOC, LTP Contributors and the DRS can have access to data directly from ESOC

    • Only authorised data is available to each user

    • i.e. DRS will not have access to all LTP data

  • However, plan is for all users to access data through STOC

    • STOC will provide data in Engineering values

  • STOC provides single point of contact between Science Community and the MOC

  • Data analysis tools will be run within the STOC

    • One set of tools will be treated as the Golden Standard

    • STOC tools will be under Configuration Control

    • LTP Contributors are at liberty (encouraged) to analyse the data, either with own tool set, or using a copy of the STOC tools.

  • Data analysis algorithms must be verified prior to launch


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Science Ground Segment

  • Experimental Master Plan written by STOC with input from Science Team

    • Will be extended to include details of specific procedures (i.e. discharging of proof mass)

  • Industrial Procedures will be written by Astrium

    • The building blocks of the experimental runs

  • Run Procedures written by LTP Team and validated by STOC with LTP/LPF simulator

  • Satellite database compiled by Astrium UK

  • Telecommands will be generated and validated by ESOC

  • Run procedure will look something like

    D1[t1s,x1W, y1s], D2[t2s,x2W, y2s], T1[t3,23o], ……




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Location of STOC

  • STOC is being developed in ESAC, Madrid

  • During s/c commissioning and nominal operations, STOC will relocate to ESOC, Darmstadt

    • Allows faster access to mission planners, Satellite Operations Manager (SOM), etc

    • Nominal operations being treated as a payload commissioning phase

  • After nominal ops (during station keeping), STOC relocates back to ESAC!

    • ALL further science operations (DRS and extended mission) will be run from ESAC


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Science Ground Segment

  • Science Ground Segment described in more detail in the Science Operations Scenario Document (S2-EST-PL-5005), Science Implementation Plan (LPF-PL-ESAC-DT-001), and Science Ground Segment Design Description (LPF-ESAC-DT-002)

  • Science Operations Ground Segment to be fully setup by GS-DPDR (2nd Quarter 2007)


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LTP Contributors Role

  • During development, the LTP Contributors (LTP-C) will be involved in defining the procedures for the hardware they have developed and built

  • The LPF Science Team will also be involved in the creation of the Experiment Master Plan

  • During operations, the LTP-C are required to support the commissioning of their hardware (as defined in the MLA)

  • The LTP-C will also be involved in the analysis and particularly the interpretation of the data



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