ISIS ISIS An Initiative for Space Innovative Standards Author: - - PowerPoint PPT Presentation

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isis isis an initiative for space innovative standards
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ISIS ISIS An Initiative for Space Innovative Standards Author: - - PowerPoint PPT Presentation

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ISIS ISIS An Initiative for Space Innovative Standards Author: Paola VAN TROOSTENBERGHE with ISIS team (CNES) Avionics Data Control Software Systems November 2010 ESTEC ISIS Presentations summary Status ISIS content ESA

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ISIS

ISIS An Initiative for Space Innovative Standards

Avionics Data Control Software Systems November 2010 – ESTEC

Author: Paola VAN TROOSTENBERGHE with ISIS team (CNES)

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

Presentation’s summary

■Status ■ISIS content ■ESA SAVOIR / CNES ISIS links ■Conclusion

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

STATUS

■Institutional missions

 PROTEUS and MYRIADE line of products

 Product line approach efficiency demonstrated (institutional and industrial missions )  On going obsolescence

 Standard and regulation evolutions  Exploitation costs growing : CNES currently operating 25 in orbit satellites belonging to different product families (SPOT, Proteus, Myriade)

■Industrial missions

 Existing multi mission industrial platform product lines  LEO missions market growth  But a small market which leads to important non recurring and maintenance effort

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

Common opportunity

Both institutional and industrial needs lead to :

 Rationalizing operational concept and system architecture, making the most of lessons learned from previous product families experience  Making a “reasonable” step forward in innovation and performance, to fit future missions requirements and to limit operation costs  Deriving a long term development strategy  Taking into account new standards and regulations (French Space Operations and Debris Mitigation Law)  Mastering procurement conditions: costs, schedules, risks

=> Opportunity to a common approach between institutional and export missions to share development and maintenance costs

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

ISIS ? Initiative for Space Innovative Standards

■Born from a convergence between CNES and Industrial partners

 Same conclusions about the context  Needs of more standardisation in the product lines  Needs of a better sharing of non recurring development and maintenance costs

■To define a standard based on state of the art technology and a good vision on both institutional and export needs

 Allows a smooth transition from existing product lines  Is more appropriate than developing a new generic product line from scratch in economical terms

=> A partnership between CNES and primes (EADS and TAS) to commonly define and promote such rationalisation

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

Main drivers from lessons learnt

■New Standards and technical state available

 Board to ground interface (Packet Utilization Standard, CCSDS)  ECSS batch C  French law on space operations and debris mitigation  Autonomy driving more operation automation and system validation simplification

■Rationalisation of Space Services and Operations (interoperability) ■Reuse of products involved in space services: Platform, Command & Control Ground Segment, Simulators, System Data Base ■Improve rationalisation of processes involved throughout the Missions life, from early mission sizing to operations and maintenance

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

ISIS : area of concern

■A technical standard allowing rationalisation of :

 Space Services in terms of operations & payload services  Products involved in space services: Platform, Command & Control Ground Segment, Simulators, System Data Base

■A rationalisation of processes involved throughout the Space Missions life

 Early mission sizing  Mission Specifications writing  Development and Validation (System and Satellite)  Operations and Maintenance

■A dedicated organisation with CNES and Primes in charge of

 Defining the standard  Deploying the standard  Maintaining the standard

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ISIS

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Technical standardization axes

■Mission control : Interfaces between mission control center and satellite control center ■Operations

 Reuse of ground control segment components  Board / ground interface  Operability, TM & TC: modes, monitoring…

■Payload units

 Requires heavy interface management  Standardization of the platform resources and interfaces used by the payload

■Platform equipment (OBC, TTC, sensors, power units, I/O…) : General interface and environment specifications

Mission Control Center Satellite Control Center

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

ISIS framework

Platform Payload CNES

Multi missions Ground Systems

Ground Ctrl segment

Mission ground segment

Launcher PF EGSE Simulator PL EGSE

Space segment Ground segment

Com PF/CU I/O EMC Thermal ctl SLE Debris … CGS/MGS I/F Launcher I/F B/G RF I/F

  • perability

PUS Model std I/F Simu PF PL computer X band TM Mass memory PL model

Specific Generic

PF/Equipment I/F

Interface Multi mission

Reusable components

ISIS

STD axis

Mission Data Exchange

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REUSABILITY ■Product and interfaces identification is not the only driver for reuse ■Flexibility is also a key issue for reuse of a product line (platform, command & control ground segment components) ■ISIS standards provide driving technical requirements in terms of:

 Modularity (battery, power distribution, I/O…)  Options (ciphering / authentication, payload data management…)  Segmentation of performances (pointing, propellant, agility…)

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

Main processes standardisation axes

■Generic documents rationalizing processes:

 Initial missions sizing: based on standardised data and method from primes product lines  PA specs, based on ECSS tailoring  Operation concept  Development (SOW, standard deliveries & development plan…)  Requirement management & traceability

■Improvement of exchanges between entities involved in the mission

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

ISIS standard specification

Design Spec segments/design Spec Design Spec

SYSTEM SATELLITE GROUND

Missionisation Guide Requirements/conf. Mgt Generic System Spec Generic Sat Spec Generic CCC Spec System AIV Plan Syst Data Mgt Satellite AIV Plan System and OnBoard/Ground IF Specs SOW template

ISIS Documentation

PF/CU IF Specs Specs IF sol/sol Data model Nomenclature GDIR CC design STB CC PA Syst Referential PA Ground Referential PA Satellite Referential

OPS SIMU (TOMS)

Generic TOMS specification IF Specs TOMS/CCC Standard Spec for Sim° Models

Rationalise the products Rationalise the processes

Product Trees

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The opportunistic deployment process

■Status:

 Existing product lines  Limited number of short term missions  Permanent evolution: obsolescence, ITAR, regulations, standards, geo-return…

■Deployment process:

 Developing new product lines only for standardization does not make sense  A mid term convergence process seems preferable:

 ISIS standards will be progressively applied in the frame of missions  Every time new developments are required due to the “natural” evolution process, ISIS specifications will be promoted

 Needs to well define which target to converge to => reason why the ISIS standard must be clearly visible

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ISIS

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Relationship with other standards

■ISIS is not a new European standard but is complementary to others :

 More a « rationalized » way of expressing CNES missions requirements  As close as possible to ECSS, CCSDS…  Complementary to SAVOIR (system interfaces, operability)  Oriented towards short term applications

■As far as they can help, ISIS standards will be proposed as input for other standardization

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ISIS

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

ISIS main schedule

2007 CNES initial study 2008 2009 2010 2011 ISIS preliminary definition ISIS high level specs ISIS detailed specs Beginning of partnership First specs available for missions

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ISIS

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Preliminary lessons learned after 2 years work

■ Rationalization is difficult on topics subject to competition and has to be limited to basic services ■ Primes product lines are not so different as far as basic services are concerned ■ Standardization should be focussed on topics involving separate entities:

 Primes  PF equipment suppliers  Payload suppliers  Operational teams

■ On the opposite, standardization should not address matters local to one entity, and limit design constraints as much as possible ■ Standardization requires a leading authority, able to make a choice between equivalent solutions. In ISIS case: the CNES.

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ISIS

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ESA SAVOIR and CNES ISIS on going relationship ■Existing exchanges on SAVOIR process and CNES ISIS initiative ■Documentation exchanges ■On going analysis to confirm what could benefit to each

  • thers from the 2 different approaches
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Conclusion

■ ISIS is a great opportunity:

 A complete, suitable and coherent set of specifications dedicated to a wide range of LEO missions, close to finalization  Compatible with up to date technology, standards and regulations  Will contribute to significant system costs and risks reduction  To standardise as much as possible a way of developping, validating and

  • perating space systems

■ Beyond the formal documentation, the standardization process is on the way, and is already progressively introduced in missions:

 PUS tailoring  PA specifications  Board / ground interface specifications  in the future GDIR, PF/payload interfaces

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Thanks for your attention

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The mission point of view

Mission management

ISIS STANDARD SERVICES TO THE MISSION Mission planning PL commands PAYLOAD System data: orbit, events… Payload HK data Payload mission data (opt)

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

Interoperability : The ground segment point of view

Satellite operators

ISIS standard C&C Ground Segment

Station network services

Mission Satellites OPS Simulator PF / PL PF / PL Mission Missions OPS Simulator PF / PL OPS Simulators PF / PL Satellites PF / PL Satellites PF / PL

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November 2010 Avionics Data Control Software Systems 2010 – ESTEC

ISIS: the spacecraft point of view

PAYLOAD ISIS standard platform OBC PF Units PF Units PF Units

Satellite

  • perators

PF & PL services

  • perability

PL services:

  • Power
  • Thermal Control
  • I/O
  • FDIR
  • Data bus
  • Data storage & X

band Launcher Envt Specs

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=> Better system data exchanges to improve development, validation and maintenance processes

OBCP

BDsat

Mimics PF models

Prime

OBCP

BDsys

Mimics PF Models

CNES

Exchanged Files Standard formats Meta- models

DATA EXCHANGES