document title / titre du document TRP W ORK PLAN ... - emits - ESA

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TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 TRP Reference: Title: T603-14ET Frequency Flexible Synthesizer Breadboard suitable for O/B TTC Deliverables: Current TRL: Target TRL: Application Need/Date: Application/Mission: Contract Duration: SW Clause : - Dossier0 Ref.: Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: Title: Frequency Flexible Synthesizer Breadboard suitable for O/B TTC: additional work The overall objective of this activity is to analyse, design and breadboard a Frequency Flexible Synthesiser for space application. The S-band TT&C transponders for Near Earth applications represent the main target, but it can be suitable also for other applications for instance the X-band TT&C Transponders and the downlink Telemetry Transmitters.The Frequency Flexible Synthesiser shall allow programming the transponder for different RF channels. This can be applied on ground (before launch), but using a proper command in-flight as well. In-flight frequency agility becomes very useful in particular for spacecraft constellations, multiple launch solutions (to control in frequency diversity several spacecrafts during LEOP phase) and for secure link applications. This activity shall include the following main technical phases: architectural definition of the overall unit with particular emphasis on the frequency plan issues; design, breadboarding and testing of the frequency synthesiser; and design development plan (up to the flight model) including all the indications in terms of flight technologies, risk, schedule and costs. Deliverables: Current TRL: Target TRL: Application Need/Date: Application/Mission: Contract Duration: SW Clause : - Dossier0 Ref.: Consistency with Harmonisation Roadmap and Conclusions: Page 159 of 227
TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 TRP Reference: Title: T603-29ET Telecommand & Telemetry System Security This design study will include the following areas: 1. Identification and evaluation of threats and vulnerabilities on current ESA Spacecraft Telecommand and Telemetry systems with an end-to-end perspective but with particular emphasis on the Space link and considering the particulars of various ESA missions, e.g. Science, Earth Observation, Manned Space flight, Navigation, Telecommunications. 2. Exploration and definition of technical concepts for security measures at the relevant CCSDS protocol layers to guarantee adequate levels of availability, authentication, confidentiality, integrity and non-repudiation; particular emphasis shall be given to: physical and coding layers where current ESA/ECSS standards make no provision for Security and denial-of-service (jamming) attacks or traffic analysis are a possibility; application, packet, segment and transfer layers for the definition of authentication and encryption protocols where generic concepts have been documented by CCSDS but not standardised; particular implementations performed by ESA and other Agencies but either outdated or constrained by the particular mission and therefore, inadequate for future missions; Consideration of Operational aspects, e.g. key management; Consideration of Ground Networking aspects, e.g. outsourcing. 3. Selection and detailed study for a case-study mission, e.g. Earth Observation. 4. Derivation of security requirements for equipments and facilities on both Space and Ground Segments. Deliverables: Technical Notes Current TRL: TRL1 Target TRL: TRL2 Application Need/Date: TRL5 by 2009 Application/Mission: all programs Contract Duration: 15 months SW Clause : - Dossier0 Ref.: T-7827 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: T603-31QC Title: Linearity Assessement of GaN Technology GaN offers the potential for realising state of art power performance. Previous ESA work programmes have shown that there is a requirement to investigate novel device structures to further enhance transistor performance. The aim of this activity is to optimise the GaN transistor structure (both physically and from a materials growth perspective) to achieve higher power performance through the introduction of device architectures known to enhance performance such as field plates, double hetero-junction channels, recess structures, graded channel doping and new vertical transistor structures. In particular, efforts will be undertaken to investigate the device and technology trade-off’s required to achieve simultaneous high linearity and high power added efficiency performance, along with undertaking an assessment of the introduction of the proposed techniques for improvement of device reliability and manufacturability. This work is an important requirement for future multi-carrier telecommunications transponders and if successful will allow world class device performance with increased power added efficiency and linear output power to be achieved compared with GaAs pHEMT technology. Deliverables: Technical notes, device samples, technology exploitation plan. Current TRL: TRL1-2 Target TRL: TRL2-3 Application Need/Date: TRL5 by 2010 Improved performance power transistors Application/Mission: for use in EO, Telecomms, Navigation Contract Duration: 24 months and Science payloads SW Clause : - Dossier0 Ref.: T-7737 Consistency with Harmonisation Roadmap and Conclusions: Page 160 of 227
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