Auto-test based on OBCP Globalstar 2 case

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1 Auto-test based on OBCP Globalstar 2 case Gérald GARCIA Guillaume VERAN Thales Alenia Space France EL/PE/S 2 / 11 / 2010 ADCSS 2010

2 Agenda 1 - Globalstar 2 project 2 - Auto-test principles 3 - OPISS product 4 - Conclusions 2

3 Globalstar 2 Globalstar 2 project : 48 satellites to be built by Thales Alenia Space Very strong programmatic constraints Very high AIT production rate 6 satellites batch for each launch Distributed/pipelined AIT Toulouse, Cannes and Roma Production pipe with several s/c in parallel Avionics qualification principles : Full qualification campain on PFM Reduced tests on others FM (X-Checks,...) 3

4 Auto-test needs and constraints Avionics AIT needs Reduce the validation planning Automatic test sanction (pass/fail) with diagnosis on failure Send more commands than through the ground/board interface per seconds Reduce the time spent in telemetry interface waits (HK periods, TC acceptance,...) Provide a affordable and repeatable solution for mass production No need for avionics engineers to execute and analyze the test Less ground support Very repeatable tests on different premises 4 Let the avionics AIT engineers implement the test : Flexibility in the test procedure No SW modification on procedure update Independence of the different functional chains

5 OPISS Overview OPISS = On-Board Procedure Interpreter for Space Systems OPISS is a multi-purpose on-board procedure interpreter based on Java and designed for space systems OPISS in a nutshell: Offers powerful features for OBCP Dynamic loading/unloading Interface with OBSW Compliant of ECSS-E-ST Is compatible with space software constraints Memory & CPU Criticality & real-time compatibility Provides a strong isolation between OBCP and OBSW Developed in collaboration with CNES 5

6 Auto-test OBCP process OBCP Edition Chain Satellite Database OBCP Production Chain OPISS OBCP Generation Chain Java Compiler OBCP Validation Chain Satellite Simulator OBCP Editors Class file OBCP Functional Validation Tool Java source code OPISS Class Analyzer Validated OBCP 6 September 2010 OBCP OBCP Ground Store

7 A dedicated language and tool SCOPE is the Thales Alenia Space editor for : Flight control procedures OBCP (and action sequences) A specific editor with dedicated high level instructions has been developped for autotest Tailored for avionics validation needs Specific instructions for test reporting, test sanction,

8 Operational use on GlobalStar 2 Procedures has been written autonomously by avionics engineers Fully developed with SCOPE Validated on the avionics test bench Several procedures per functional chain Procedure are executed several time during AIT sequence : Initialy to check the correct assembly of the equipments During and after the different environmental tests No need for expert or complex setup to run the tests ; Send a TC to the spacecraft Wait the TM producing the result Reduced operators work load

9 Conclusion Constellation projects require new approaches and new solutions In the context of GlobalStar 2, auto-testing of spacecrafts based on OBCP is efficient : Effective reduction of the test phase Very simple and efficient solution Currently used daily by AIT in Roma Baseline for next constellations : O3B and Iridium With an enhanced version and powerful test scenarios Possible use for telecommunication satellites familly Concerning OPISS : Flight qualification is in progress Thales Alenia Space baseline for OBCP

FILE MANAGEMENT AND FILE TRANSFER CNES VIEWS. Christian POULIQUEN

FILE MANAGEMENT AND FILE TRANSFER CNES VIEWS Christian POULIQUEN 1 SOMMAIRE INTRODUCTION NEEDS AND OPS CONCEPT STANDARDS OVERVIEW CNES MISSION STATUS OPEN POINTS 2 FILES IN SPACE - SHORT INTRODUCTION Many