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Space Data Routers for Exploiting Space Data

Space Data Routers for Exploiting Space Data. Martin Götzelmann, VEGA Vassilis Tsaoussidis, DUTH Sotirios Diamantopoulos, DUTH Ioannis A. Daglis, NOA Theodore Amanatidis, SI Bogdan Ghita, UoP. Presentation Outline. Project Context and Motivation Delay/Disruption Tolerant Network

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Space Data Routers for Exploiting Space Data

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  1. Space Data Routers for Exploiting Space Data Martin Götzelmann, VEGA Vassilis Tsaoussidis, DUTH Sotirios Diamantopoulos, DUTH Ioannis A. Daglis, NOA Theodore Amanatidis, SI Bogdan Ghita, UoP

  2. Presentation Outline • Project Context and Motivation • Delay/Disruption Tolerant Network • Study Objectives and Study Logic • Application Scenarios to Study • DTN across TM/TC Packet and AOS Protocols • Conclusions SPACE DATA ROUTERS project has received funding from the European Union Seventh Framework Programme (FP7/ 2007-2013) under grant agreement No 263330 ([FP7/2007-2013_FP7-SPACE-2010-1, SP1 Cooperation, Collaborative project) This presentation reflects only the authors views and the Community is not liable for any use that may be made of the information contained therein. ESAW 2011 - Space Data Routers

  3. Team Members and Co-Authors Team Composition Democritus University of Thrace, Greece (DUTH) Department of Electrical and Computer Engineering Coordinator VEGA Space GmbH Space Internetworks Ltd, Greece (SI) National Observatory of Athens, Greece (NOA) Institute for Space Applications and Remote Sensing (ISARS) University of Plymouth, UK (UoP) Centre for Security, Communications, and Networks (CSCAN) Co-Authors Prof. Vassilis Tsaoussidis Sotirios Diamantopoulos Theodore Amanatidis Dr Ioannis A. Daglis Dr. Bogdan Ghita ESAW 2011 - Space Data Routers

  4. Project Context and Motivation Science Needs Timely access to space data Dissemination of large data volumes Delay / Disruption Tolerant Networks (DTN) Emerging Technology ESAW 2011 - Space Data Routers

  5. DTN in Space – Classical Scenario ESAW 2011 - Space Data Routers

  6. DTN Concepts and Protocols Source Dest. BP BP BP BP long delay TCP Transp. Transp. Transp. TCP LTP LTP Transp. Lower Layers Lower Layers Lower Layers Lower Layers Lower Layers Lower Layers Appl. Appl. Bundle Layer Region Specific Layers Region Specific Layers Region Specific Layers Region Specific Layers Store and Forward Message Switching ESAW 2011 - Space Data Routers

  7. Communication Scenario – Protocol Stack ESAW 2011 - Space Data Routers

  8. DTN Status • NASA has heavily invested in space internetworking based on DTN • Flight validation experiments • Epoxi Spacecraft (Deep Space) 2008 • ISS based payload 2009 • Adopted by CCSDS in 2008 • General agreement that this is a promising technology but different views on maturity • Open Issues • Routing policies design and evaluation • Security concerns • Compatibility with space protocols ESAW 2011 - Space Data Routers

  9. Previous Work by DUTH for ESOC • Project: Extending Internet into Space • Phase 1 • Produce a design directive for space internetworking • Phase 2 • Design an appropriate DTN/IP Space-Ground Testbed and associated scenarios for evaluation, mainly targeting Mars communications • Phase 3 • Evaluate CFDP versus DTN • Enhance DTN in the context of space internetworking (routing, reliability) • DTN Security Mechanisms • Prof. Tsaoussidis is ESA Delegate in the CCSDS DTN Working Group ESAW 2011 - Space Data Routers

  10. Study Logic ESAW 2011 - Space Data Routers

  11. Application Scenario Groups to Study • Extending End-User Access to Space Data • CHRIS Hyperspectral Data from PROBA-1 Satellite • AVHRR Images from POES/NOAA Satellites • Exploiting/Disseminating Data from Deep Space • OMEGA Hyperspectral Data from ESA/Mars Express • OSIRIS Image Data from ESA/Rosetta • Acquisition/Delivery of Vast Volumes of Data • ESA Sentinels • Exploiting Thematic Cross-Mission Data • Space Weather / Sun-Earth Connection • Urban Heat Islands and Urban Thermography ESAW 2011 - Space Data Routers

  12. Expected Impact of DTN - SDR • PROBA-1, POES/NOAA • Extension of end-user’s access to data • Increase of data acquisition frequency • Increase of data downloading rate • ESA/Mars Express, ESA/Rosetta • Elimination of data loss and increase of data volume received • Increase of access speed to deep space data • ESA/Sentinels • Acquisition, management and efficient dissemination of large volumes of data • Multiple Missions • Real-time access to data from multiple missions • Successful acquisition of data even under hostile communication conditions • Improved interconnection between ground and space assets ESAW 2011 - Space Data Routers

  13. Example: Urban Heat Islands (1/2) ESAW 2011 - Space Data Routers

  14. Example: Urban Heat Islands (2/2) Current problems: • Different location of data. Even for the same sensor/mission the data location differs for “real-time” and “on demand” use. • “Real-time” is only ensured when the receiving station is within ISARS. Any other route means “near real-time” (even hours of delay), which means that any future service based on this data cannot be given in real time. Expected impact using SDR • The application allows for data gathering from multiple missions for one scientific objective. • Advanced protocols allow for successful data transmission even in harsh/challenged communication conditions. • Depending on the mission, better interconnection between space and ground assets • Data can be transferred to other DTN nodes in Space before being dumped in Earth when direct delivery is not possible • Ensure real time data acquisition. ESAW 2011 - Space Data Routers

  15. Routing of Data for Improved Access ESAW 2011 - Space Data Routers

  16. DTN over TM/TC Links (1/3) Linux Box SIMSAT/SCM SIMSAT/Ground DTN CORBA/TCP Stream I/F Data Link Layer Stream I/F conv BP LPT conv SLE Provider LAN/WAN Spacelink SLE/TCP Linux Box SIMSAT/SOC DTN Data Link Layer Only for CCSDS Packet TM/TC conv LPT BP SLE User conv ESAW 2011 - Space Data Routers

  17. DTN over TM/TC Links (2/3) IMBU SIMSAT/SCM Linux Box TCP Only for CCSDS Packet TM/TC DTN Data Link Layer HW I/F conv conv BP LTP I/F or PCM Spacelink Linux Box SIMSAT/SOC SLE/TCP DTN Data Link Layer LAN/WAN conv LTP BP SLE User conv ESAW 2011 - Space Data Routers

  18. DTN over TM/TC Links (3/3) DTN TestBed/SCM DTN TestBed/GS Linux Box Linux Box UDP I/F Data Link Layer Data Link Layer UDP I/F LAN / WAN UDP UDP BP LTP BP LTP conv conv Spacelink • Downlink Packet TM – Uplink Packet TC • Downlink: AOS– Uplink AOS • Downlink: AOS– Uplink Packet TC • Using Encapsulation Packets ESAW 2011 - Space Data Routers

  19. Conclusions • Objectives of the SDR Project is to investigate how DTN can support scientific users • Space Data Routers are devices for routing of space data not only in space but also on ground, providing unified communication channels for dissemination of space data • Expected Capabilities to be analysed • Extension of end-user access to space data; • Improved exploitation of data from deep space • Efficient delivery of vast volumes of data to end-users over terrestrial internetworks • Potential of DTN overlays to administer thematic cross-mission space data ESAW 2011 - Space Data Routers

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