27/05/2014. Dr. Peter Fritzen Telespazio VEGA Deutschland GmbH. Architecture and Development Process of Spacecraft Simulators for ESOC

Transcription

1 Architecture and Development Process of Spacecraft Simulators for ESOC Dr. Peter Fritzen Telespazio VEGA Deutschland GmbH 27/05/2014 Telespazio VEGA Deutschland

2 Introduction AGENDA Telespazio VEGA Deutschland GmbH (VEGA) The Simulation, Navigation and Technology (SNT) Group Satellite Missions of the European Space Agency (ESA) Mission Lifecycle and Phases Some recent example missions Role of the European Space Operations Centre (ESOC) Architecture of a Spacecraft, and a Reference Architecture for Simulators High-Level Architecture of a Spacecraft Approach for a Reference Architecture to facilitate Model Re-Use Example of a specific instrument Model Driven Architecture (MDA) for Design and Development Application Lifecycle Management (ALM) and Automation 2

3 Introduction AGENDA Telespazio VEGA Deutschland GmbH (VEGA) The Simulation, Navigation and Technology (SNT) Group Satellite Missions of the European Space Agency (ESA) Mission Lifecycle and Phases Some recent example missions Role of the European Space Operations Centre (ESOC) Architecture of a Spacecraft, and a Reference Architecture for Simulators High-Level Architecture of a Spacecraft Approach for a Reference Architecture to facilitate Model Re-Use Example of a specific instrument Model Driven Architecture (MDA) for Design and Development Application Lifecycle Management (ALM) and Automation 3

4 Satellite Missions of the European Space Agency AGENDA Telespazio VEGA Deutschland GmbH (VEGA) The Simulation, Navigation and Technology (SNT) Group Satellite Missions of the European Space Agency (ESA) Some recent example missions Mission Lifecycle and Phases Role of the European Space Operations Centre (ESOC) Architecture of a Spacecraft, and a Reference Architecture for Simulators High-Level Architecture of a Spacecraft Approach for a Reference Architecture to facilitate Model Re-Use Example of a specific instrument Model Driven Architecture (MDA) for Design and Development Application Lifecycle Management (ALM) and Automation 8

5 Satellite Missions of the European Space Agency SOME EXAMPLE MISSIONS Earth Observation Missions CryoSat: Are the Ice Caps shrinking? Launched in April 2010 Still in Operations Includes 3 Star Trackers Swarm: Measure Earth Magnetic Field Launched in November 2013 Just started Operations Includes 2 Star Trackers EarthCare: Clouds and Radiation Launch scheduled for

6 Satellite Missions of the European Space Agency SOME EXAMPLE MISSIONS Science Missions Rosetta: The Comet Chaser Launched in March 2004 Land on comet November 2014 Includes a Star Tracker Venus Express: Explore Venus Launched in November 2009 Science Operations just ended Includes a Star Tracker Solar Orbiter: Solar Physics Launch scheduled for

7 Satellite Missions of the European Space Agency CDF ECSS-E-TM-10-21A: MODELLING & SIMULATION ENG. PROCESS FES FVT SVF RTB Operational Simulator Model / Simulation Development by ESA by Industry 11

8 Satellite Missions of the European Space Agency ROLE OF THE EUROPEAN SPACE OPERATIONS CENTRE (ESOC) Seconds after separation from the launcher [ ] the spacecraft becomes the responsibility of the teams at ESOC. Mission Planning Mission Operations Mission Disposal 12

9 Satellite Missions of the European Space Agency ELEMENTS INVOLVED IN A SATELLITE MISSION 13

10 Satellite Missions of the European Space Agency INTERFACE BETWEEN ESOC AND A SPACECRAFT ESOC Monitor a Spacecraft via Telemetry Telemetry is generated by each subsystems of the Spacecraft Telemetry is emitted by the Spacecraft to send data back to Earth Telemetry is received by a Ground Station Receiver Telemetry is visualised using the Satellite Control and Operation System (SCOS) ESOC Control a Spacecraft via Telecommands Telecommands are assembled by a Spacecraft Controller via SCOS Telecommands are transmitted by a Ground Station Transmitter Telecommands are received by the Spacecraft Telecommands are (typically) processed by the On-Board Computer 14

11 Architecture of a S/C, and a Reference Architecture for Simulators AGENDA Telespazio VEGA Deutschland GmbH (VEGA) The Simulation, Navigation and Technology (SNT) Group Satellite Missions of the European Space Agency (ESA) Some recent example missions Mission Lifecycle and Phases Role of the European Space Operations Centre (ESOC) Architecture of a Spacecraft, and a Reference Architecture for Simulators High-Level Architecture of a Spacecraft Approach for a Reference Architecture to facilitate Model Re-Use Example of a specific instrument Model Driven Architecture (MDA) for Design and Development Application Lifecycle Management (ALM) and Automation 15

12 Architecture of a S/C, and a Reference Architecture for Simulators DATA FLOW BETWEEN ESOC AND A STAR TRACKER Star Tracker SLE API On-Board Computer Radio Frequency Control Environment Ground Stations OSI Stack TCP/IP Ground Space- Segment Ground Link Spacecraft SCOS

13 Architecture of a S/C, and a Reference Architecture for Simulators DATA FLOW BETWEEN ESOC AND A STAR TRACKER MODEL Alpha-Numerical, 2D and 3D Visualisation SIMSAT Star Tracker Model Simulation Monitoring and Control OBSW Maintenance MMI Component Based MMI Toolkit Mission Specific MMI JavaScript based Commander SLE API Emulator and On-Board Software Radio Frequency Control Models Environment Models Ground Station Models OSI Stack TCP/IP Ground Space- Segment Ground Link Spacecraft SCOS

14 Architecture of a S/C, and a Reference Architecture for Simulators APPROACH FOR SPACECRAFT SIMULATION For all Spacecraft Subsystems, a Reference Architecture (REFA) has been established Architecture defines common components and interfaces between them Architecture makes use of common libraries The On-Board Software is used from the Mission The Emulator is generic (per Processor) and can be re-used across missions The Environment Models are implemented as a Library which can be configured per Mission Ground Station Models are independent of a specific S/C and can be re-used across missions SLE API Star Tracker Model Emulator and On-Board Software Radio Frequency Control Models Environment Models Ground Station Models OSI Stack TCP/IP 18

15 Architecture of a S/C, and a Reference Architecture for Simulators THE SPACECRAFT SIMULATOR REFERENCE ARCHITECTURE Defines a reference architecture for operational simulators for ESOC. Defines standard interfaces between common satellite subsystems models Used within ESOC s UML modelling framework (UMF) Strongly based on ESOC s Generic Models (GENM) Libraries Promotes consistency in design across the different mission simulators facilitates re-use of design and models. No model implementation provided design only. Can be extended to meet a particular mission simulator needs. Mission changes may feed back into the maintained REFA. 19

16 Architecture of a S/C, and a Reference Architecture for Simulators REFERENCE ARCHITECTURE (REFA) AND GENERIC MODELS Reference Architecture (Components and Interfaces) Payloads Radio Frequency Electrical Power Thermal Control Attitude Orbit and Control System Reaction Control Data Handling Data Links Emulator ESOC ERC32 TSIM Generic Models (Model Libraries) Generic Units (GENERIC) Simulator Test Harness (SIMTEST) Flight Dynamics Systems I/F (FDSDIF) Position and Env. Model (PEM) Simulation Dynamics Model (SIMDYN) Simulation Packet TC/ TM Toolkit (SIMPACK) Thermal Network Generic Model (TNET) Satellite Electrical Network Sim. (SENSE) Generic Coordinate System S. (GCOSS) Parameter Mapping Service (PAMS) Simulation Monitor (SIMON) Generic Configuration Service (GCONS) COMMON Simulation Model Portability 2 (SMP2) Component Model Generic Tracing Service (GTRAS) Logger Scheduler Time Keeper Resolver Event Manager 20

17 Architecture of a S/C, and a Reference Architecture for Simulators REFA SUBSYSTEMS The Reference Architecture covers the following subsystems AOCS DHS DL EPS RCS RFCS TCS PL Attitude and Orbit Control System Data Handling System Data Links Electrical Power System Reaction Control System Radio Frequency Control System Thermal Control System Payloads (only generic architecture) 21

18 Architecture of a S/C, and a Reference Architecture for Simulators REFA EXAMPLE THE STAR TRACKER HEAD ARCHITECTURE REFA defines interfaces and abstract models for design These models make use of GENM interfaces and model libraries GENM libraries provide fully tested code for common cases Missions need to complete their implementation by deriving from REFA package Units [ Sensor Overview ] «SMP2interface» IAlignedUnit «SMP2interface» ISensor package Data[ StarTrackerHead General Overview ] <<SMP2interface>> ISensor <<SMP2interface>> IStarTrackerHead «SMP2 m od el» AlignedUnit <<SMP2model>> Sensor <<SMP2model>> StarTrackerHead «SMP2 m od el» Sensor «SMP2field»#updateTargetsEvent : ModelEvent «SMP2property»+ TargetVisible : Bool «SMP2property»+ IsBlinded : Bool «SMP2entryPoint»+UpdateTargets() «SMP2command»+ DoUpdateTargets() + Target 0..* «SMP2 m od el» SensorTarget Spacecraft ISpacecraft (GENM.SIMDYN) OnUpdateTargets «emit» «event» TargetsUpdateEvent 22

19 Architecture of a S/C, and a Reference Architecture for Simulators REFA EXAMPLE THE COMPLETE STAR TRACKER Complete Star Tracker (STR) design includes various other elements The STR communicates with the On-Board Computer via a Bus The STR decodes Telecommands and encodes Telemetry The STR implements a Functional Model (complex state machine) The STR receives Measurements from the Star Tracker Head package str [ str-overview ] «SMP2interface» IPacketReceiver Decoder «SMP2model» StrDecoder FunctionalModel «SMP2interface» ITcReception «SMP2interface» IRemoteTerminalUser «SMP2model» StrDhsInterface «SMP2model» StrFunctionalModel Head «SMP2interface» IStarTrackerHead «SMP2model» StarTrackerHead Encoder «SMP2interface» IPacketReceiver DhsInterface «SMP2model» StrEncoder «SMP2interface» ITmTransmission 23

20 AGENDA Telespazio VEGA Deutschland GmbH (VEGA) The Simulation, Navigation and Technology (SNT) Group Satellite Missions of the European Space Agency (ESA) Some recent example missions Mission Lifecycle and Phases Role of the European Space Operations Centre (ESOC) Architecture of a Spacecraft, and a Reference Architecture for Simulators High-Level Architecture of a Spacecraft Approach for a Reference Architecture to facilitate Model Re-Use Example of a specific instrument Model Driven Architecture (MDA) for Design and Development Application Lifecycle Management (ALM) and Automation 24

21 TECHNICAL CHALLENGES Accurate Modelling of highly complex System High focus on formal testing and validation Demanding Requirements on Documentation European Commission for Space Standardisation (ECSS) Long-Term Maintenance until End of Mission Typically requires migration to new platform/operating system Distributed Development Team Fully integrated development environment across countries 25

22 RECENT TECHNOLOGIES Full Automation of Testing Unit and Integration Testing is done via CppUnit / JUnit System Testing is done via JavaScript procedures (Scripting Language) All Tests are executed every night ( nightly build and test approach ) Apply Model Driven Architecture (MDA) based development approach Complete system is modelled in Universal Modelling Language (UML) Source code is generated from UML Design Documentation is generated from UML Design Strict Adherence to Open Standards Avoid dependency on a specific Platform, Operation System or Tool Use Static Code Analysis to detect platform specific code Build and Test on various Operating Systems (LINUX, Windows) 26

23 MODEL DRIVEN ARCHITECTURE APPROACH FOR SIMULATORS As a common simulation platform, a simulation standard has been defined SMP2 is the Simulation Model Portability Standard by ESA SMP is the Simulation Modelling Platform Standard by ECSS To support MDA, a Domain Specific Language (DSL) has been defined The Simulation Model Definition Language (SMDL) is part of SMP2 An Implementation of SMDL in a commercial UML tool is available Tools to generate Documentation from SMDL have been developed Tools to generate C++ Source Code from SMDL have been developed All Generic Models (GENM) have been migrated to SMDL and SMP2 The Reference Architecture (REFA) has been defined using SMDL 27

24 SMDL SIMULATION DEVELOPMENT LIFE-CYCLE AND TOOLS Architecture & Interface Design Implementation Integration Execution UML Editor UML Model Catalogue Editor SMP2 Catalogue Code Generator & Merger Model Wrapper Code Assembly Editor DEVELOPMENT ENVIRONMENT UMF SMP2 Assembly Schedule Editor SMP2 Schedule Catalogue Generator Catalogue Validator Compiler Assembly Validator Run-Time Environment Model Source Code Binary Model SIMSAT 27/05/2014 Telespazio VEGA Deutschland 28

25 SMDL MODEL DRIVEN DESIGN PROCESS Usage of UMF Tools in the context of SMDL Model Driven Design (MDD) Profile MagicDraw UML Tool SRS Requirements Import Tool Schema Generation Tool XML Schema GENM UML UML Model Catalogue Generation Tool SMP2 Catalogue REFA UML Model Validation Tool Document Generation Tool ICD Legend Data Flow Simulator Artefact Template SDD 3rd Party Tool UMF Tool CFI Artefact (REFA, GENM) UMF Artefact SUM 29

26 SMDL MODEL DRIVEN SOFTWARE DEVELOPMENT USING SMDL Usage of UMF Tools in the context of SMDL Model Driven Software Development Design Catalogue Editor Editor Development Templates UML Model Catalogue Validator Catalogue Generation Tool Package Generation Tool SMP2 Catalogue SMP2 Package Code Generator C++ Code Makefile Compiler Linker Object File Shared Object Assembly Editor SMP2 Assembly SMP2 Adapter Integration Schedule Editor SMP2 Schedule Assembly Validator Legend Data Flow Simulator Artefact 3rd Party Tool SIMSAT Component UMF Artefact UMF Tool 30

27 PROCESS OBJECTIVES Reduce Development Cost Increase Number of Deliveries ( Incremental or Agile approach) Compress Schedule Provide Transparency of current Status Subcontract at least 40% of the Development to a Qualified Partner (QPA) Share Hardware Resources between Missions 31

28 APPLICATION LIFECYCLE MANAGEMENT (ALM) Continuous Integration Project Dashboard Maintenance Requirements Issue Tracking Rules & Metrics Operations Version Control Design Test Coverage Automated Testing Deployment Implementation 32

29 SYSTEM ENGINEERING AND SOFTWARE MANAGEMENT ENV. 33

30 JENKINS 34

31 VALGRIND 35

32 SONARCUBE 36

33 DASHBOARD 37

34 HOTSPOTS 38

35 TIME MACHINE 39

36 COMPONENTS 40

37 ISSUES DRILLDOWN 41

38 SUBVERSION 42

39 References REFERENCES Some images have been taken from and are Copyright by ESA Some information has been taken from 43

40 Europaplatz Darmstadt Telespazio VEGA Deutschland