CGS for MetOp - Astrium ST Service Portal

CGS Usage for Satellite AIV
CGS User Group Meeting
September, 19 - 20, 2000 - Noordwijk
1 - CGS for MetOp and future Applications
2 - Concept for UCL Libraries
3 - Packet Utilization Standard with CGS
Astrium GmbH
Earth Observation & Science Division
Dept.: ED533 - Electrical System Integration & Test
D-88039 Friedrichshafen
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MetOp Project Overview (1)
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MetOp Project Overview (2)
Configuration and Systemparameter
Orbit Type Near-polar sun-synchronous
Repeat cycle 5 days (71 orbits)
Ref. orbit LST 09:30 dn (after 13 month drift)
Launcher AR 5 (TBC)
Satellite Characteristics
Mass at launch 3947 kg
Power consumption 5 years
Payload Module Characteristics
Total PLM Mass (incl. Instr`s): 2224 kg
Power consumption

• Standard EGSE configuration
consisting of 3 main blocks for
command & control, data acquisition
and processing and SCOE´s
(see NICE as example at left)
• Presently 7 EGSE installations in use for
– Instrument AIT (ASCAT, GRAS, MHS)
– Unit Tester for NOAA Instrument I/F
Unit
– Software verification facility for Payload
Module Controller
– Payload Module AIT
• Core EGSE of CCB´s in all installations
based on CGS
• Usage on satellite level in “master -
slave” configuration with SVM EGSE
CGS Utilisation for MetOp (1)
Discrete Status
and Commands
Command
and
Control
Block
ICU
N R
NOAA Instrument Interface Unit
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DBI
DBU
OBDH Bus
Data Front End
Core
EGSE
MMI
Stations
NIU Power
NIU Power
Front End
Test Node
Station
IEEE 488 Bus
Database
Server
CBS
CBS
Supply
PCU
NICE Power Front End
EGSE LAN
PCU
Supply
28V Power
Lines
Commands
Clocks
Analog
Digital A Telemetry
Digital B Telemetry
NOAA Instruments
RF Stim.
& Feedb.
SARR, SARP,
DCS
EGSE´s
DAPB Controller
NOAA Instrument
DAPB
Physical
Stim.
AMSU, SEM,
AVHRR, HIRS
EGSE´s
N-Instrum.
EGSE LAN
AVHRR Low Rate
DCS Data
Sum of other Inst. FMU Emulator
FMU Emulator
Front End
FMU Emulation
Controller
PDHT LAN
Block
Functional Architecture of the MetOp
NOAA Instrument Check-out
Environment
AVHRR High Rate

CGS Utilisation for MetOp (2)
• Standardisation of EGSE configurations with
CGS based core permits to extensively reuse
test software over three levels (see
schematic)
• Reusability of test software requires:
– early definition and freezing of system tree
structure
– definition of project wide applicable rules
and guidelines for test software preparation
and database maintenance
– agreement between PLM check-out team
and unit / instrument teams on functions and
structuring of automated procedures
• Central development and maintenance of
utilities and libraries to facilitate coordination
between check-out teams
PLM Avionics
Operation and Test
Procedures
SCOE / FEE
Pararmeter Definitions
PLM Operation and
Test Procedures
NIU Test Software
NIU Test Software
Preparation
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PCU TM/TC
Definitions
NOAA Instrum.TM/TC
Definitions
N-DAPB Parameter
Definitions
NICE Operation and
Test Procedures
NIU TM/TC
Definitions
NIU Operation and
Test Procedures
NIU EGSE
Parameters Defin.
Database Export
to Satellite
Information System
PLM Test Software
PLM Test Software
Preparation /
Integration
NICE Test Software
NICE Test Software
Preparation /
Integration
File Conversion and
Import
ASCAT/ GRAS/ MHS
Test Software
ASCAT Test S/W
Preparation
Test S/W for PMC
S/W Verification
SVF Test S/W
Preparation
IASI, GOME
Parameter Tables
IASI, GOME
Procedure Files
Payload Module Level
Instrument TM/TC
Definitions
Instrument Operation
& Test Procedures
Instrument EGSE
Parameter
Instrument Level
PMC and Avionics
TM/TC Definitions
SVF Operation
and Test Procedures
SVF Parameter
Definitions
Unit Level
Test Software Utilisation Scheme

CGS Experience from MetOp Project (1)
• Powerful database allowing consistent configuration and
version control across various installations for all elements of
the check-out software
• Easy database extension to add supporting information
• Adequate performance during preparation and execution
after release of ver 4.2
• Standard functionality available for telemetry telecommand
handling in the MDB after release of ver 4.3
• Check-out kernel running very stable
• Open system that permits easy adaptability to project
specifics with SAS, libraries and utilities
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CGS Experience from MetOp Project (2)
• Enigmatic user manuals: incomplete and strange
terminology
• Standard check-out functions (e.g. sending a command) not
covered by UCL but by libraries => not included in UCL
reference manual
• Numerous UCL libraries and UNIX utilities needed to be
developed
• MMI for browsing and populating MDB practically not
usable => own utilities to use BDE
• Poor visibility of execution process, improvements expected
with ver 4.4
• Time consuming preparation of synoptic pictures
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CGS use in future Satellite Projects
• Astrium ED has adopted CGS as standard core EGSE for
future projects (both ESA and others)
• Check-out kernel of the Astrium ED model based
development and verification environment for use in future
projects is based on CGS
• Extensions needed to cope with operation interface
requirements of ESA projects which are based on PUS
• Essential improvements expected for an up-to-date user
friendly MMI with CGS ver 5.x
• ESA policy of SCOS 2000 for satellite testing puts big ? on
investments into industrial control systems
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