Agenda

1
Agenda

• Introduction
• IT Objectives
• Proposed IT Test Scenarios
• IT Tests
• Other S/C Test Opportunities for EGS
• Compatibility Tests
• On-Going activities
• Conclusion

2
Introduction

• IT team provides independent verification of
  ground system readiness.
• IT team creates mission unique test plan to
  verify documented system requirements.
• Test Plan comprised of comprehensive set of
  element level test requirements and organized
  into Integrated Tests.
• The Integrated Testing approach is used to
  systematically verify ground system interfaces
  and functionality. Each test is a building block
  for later tests.

3
IT Objectives

• Verify EGS can support all mission requirements
  as
• documented in ICESAT requirements documentation.
• Verify EGS readiness to support spacecraft
  compatibility tests.
• Verify site to site connectivity
  (BASD/GSFC/EPGN).
• Document anomalies and monitor resolution.

4
Proposed IT Test Scenarios

• Scheduling Test
• S-Band Command Telemetry Data Flow
• X-Band Science Data Flow
• Ground System End-to-End
• Launch Site Test

5
IT 1 Scheduling Test

• Purpose Exercise Scheduling Interfaces within
  the ICESAT Ground System
• Participants MOC, WOTIS, EDOS, EPGN, EBNET
• Description MOC generates test schedules
• Schedules sent to EDOS
• Schedules sent to EPGN via WOTIS
• MOC generates IIRVs
• IIRVs sent to EPGN via WOTIS

6
IT 2 S-Band Command Telemetry Data Flow

• Purpose Exercise S-Band Command Telemetry
  interfaces within the ICESAT ground system
• Participants MOC, WOTIS, EPGN, EDOS, EBNET
• Description Test scheduled by MOC through WOTIS
• MOC generates commands
• Commands sent to and validated by EPGN
• Taped data flows from EPGN to MOC
• (via EDOS TBD)

7
IT 3 X-Band Science Data Flow

• Purpose Exercise X-Band science data flow
  interfaces within the ICESAT ground system
• Participants MOC, WOTIS, EPGN, EDOS, DAAC,
  EBNET
• Description Test scheduled by MOC through
  WOTIS
• Taped Science data flows from EPGN to EDOS
• EDOS processes data and flows to DAAC

8
IT 4 Ground System ETE

• Purpose Exercise complete ICESAT ground
  system in an integrated fashion
• Participants MOC, WOTIS, EPGN, EDOS, DAAC,
  EBNET
• Description Integration of IT 1, 2 and 3

9
IT 5 Launch Site Test

• Purpose Final ground system checkout and launch
  site interface test
• Participants MOC, WOTIS, EPGN. EDOS, EBNET,
  VAFB
• Description TBD

10
Other S/C TestOpportunities for EGS

• These are tests planned by ICESAT. These tests
  may present additional opportunities for EOC/EGS
  to piggyback on planned ICESAT test activities
  and interface with spacecraft.

• S/C Functional Test (FT)
• S/C Acceptance Test (AT)
• Instrument Verification Tests
• Thermal Vac/EMI
• Other Environmental Tests
• Performance Tests
• Long Duration Performance (100 Hour Test)

11
Spacecraft - Ground SystemCompatibility Tests
(GSCTs)

• Test Name Date
• GSCT 1 L-18 Months
• GSCT 2 L-12 Months
• GSCT 3 L-7 Months
• GSCT 4 L-5 Months
• GSCT 5 L-4 Months
• GSCT 6 L-1.5 Months

• Description
• S/C - G/S Basic TLM and CMD
• RF TLM and CMD (CTV)
• Instrument Operations
• End to End dry run
• End to End (Pre-ship)
• Launch Site Testing

12
On-Going Activities

• Need to work with ICESAT Project Team to
  integrate S/C schedules with G/S IT schedules.
• Need to set up ICESAT/Mission Systems Test
  Planning Working Group (TPWG) to provide forum to
  refine tests.
• Need to Identify/Develop Test Requirements
  Database.

13
Conclusion

• Ground System Integration Testing provides
  benefits by
• Mitigating risk
• Ensures highest level of compatibility both
  functionally and operationally between Spacecraft
  and ground support systems.
• Provides independent evaluation of ground system.
• Reports directly to management.