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Space Weather for Situational Awareness
Ted Driver
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Introduction
• Quick intro about what we do
• Review of space environment technologies our customers use
• New work for situational awareness (SA) users
• Current limitations
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AGI technologies
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AGI Tools – navigation perspective
• STK – Space segment– GNSS satellite and receiver design– Communications analysis
• NavTK– User segment– High fidelity receiver modeling– Navigation error analysis
• ODTK– Control Segment– GNSS Measurement processing– Orbit/Position/Maneuver determination
• Components– Dynamic Geometry
Library– Navigation Library– Terrain Library– Web enabled– .Net C#
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Current AGI space weather modeling
• STK/Space Environment– Radiation dosing over time
• AFRL and NASA models used
– South Atlantic Anomaly
effects– Micrometeoroid impacts– Vehicle Temperature
• NavTK and ODTK– IRI2001 Ionospheric model
as ‘truth’
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New work
• Re-engineering Space Environment tool– Working with a new partner to seamlessly integrate
pieces from AF-GEOSpace models into STK
• Moving to IRI2007 model
• HF comm outage developments– Current model depends on propagation loss calculated
from slant range TEC values – not easy!
• Near real time ionospheric error analysis tool– Shows unique capabilities of our components with
readily available data
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Iono error analyst
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Current limitations
• Only viable at ground level
43 miles
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Current limitations
• Only valid over CONUS
• World wide slant range TEC would be extremely beneficial
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Current limitations
• Data only available in near real time– ~30-45 minute lag– Predictive capability would make situational awareness
more complete
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Summary
• AGI tools help our customers understand their environment
• Current space weather tools address customer requested capabilities
• New work will address wider range of data and data availability
• New technologies will deliver precise, accurate information in new ways