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Wireless Phones for Martian Geologists: How the Mars Exploration Rovers Benefited from an Orbiting Mars Relay Network

Energy Efficiency. Increased Science Data Return. Precision in situ Navigation and Positioning. Public Engagement - Creating a Virtual Presence at Mars. Mars Exploration Rovers: Drivers on Telecommunications. Robust Capture of Critical Event Tracking and Telemetry. Increased Comm Contact for Complex Surface Operations.

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Wireless Phones for Martian Geologists: How the Mars Exploration Rovers Benefited from an Orbiting Mars Relay Network

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    1. Wireless Phones for Martian Geologists: How the Mars Exploration Rovers Benefited from an Orbiting Mars Relay Network Chad Edwards Jet Propulsion Laboratory, California Institute of Technology SpaceOps 2004 May 18, 2004

    3. Entry, Descent and Landing

    5. Spirit & Opportunity Data Return More than 40 Gbits of MER data have been returned (as of May 13, 2004) Over 90% via UHF relay

    6. A Decade of Mars Exploration

    7. Mars Network Evolution

    8. Network Evolution: Mars Telecommunications Orbiter High-altitude telesat orbit Increased contact time, critical event coverage High-performance relay links Electra Proximity Link Payload Addition of X-band (8.4 GHz) receive capability for high-rate directional relay links 15 dBi steered UHF antenna; 50 cm steered X-band MGA Multiple DTE links X/Ka-band prime Optical comm demo

    9. Next Decade and Beyond

    10. Summary Relay communications has significantly enhanced the Spirit and Opportunity rovers Increased data return and contact Robust critical event coverage Energy-efficient relay communications In situ navigation Today we have a truly international Mars relay network Mars Global Surveyor Odyssey Mars Express Capabilities will continue to grow as the relay network evolves

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