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Presented by Jose Romero-Mariona ICS 280 Winter 2006

StarFire: A Global High Accuracy Differential GPS System Ron Hatch, Tenny Sharpe, Paul Galyean NavCom Technology Inc. Presented by Jose Romero-Mariona ICS 280 Winter 2006. What is StarFire?. Developed by NavCom Technology, Inc.

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Presented by Jose Romero-Mariona ICS 280 Winter 2006

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  1. StarFire:A Global High Accuracy Differential GPS SystemRon Hatch, Tenny Sharpe, Paul Galyean NavCom Technology Inc. Presented by Jose Romero-Mariona ICS 280 Winter 2006

  2. What is StarFire? • Developed by NavCom Technology, Inc. and Ag Management Solutions, both components of John Deere and Company • Provides high accuracy navigation with sub-decimeter horizontal accuracy almost anywhere in the world • Made possible by various characteristics • Development of high quality, dual frequency GPS receivers for use as both reference and mobile receivers, • Dual frequency extended smoothing of the code with the carrier to remove the two largest error sources, i.e., ionospheric refraction and multipath effects, • Development of a new L-band communication module and associated multi-band antenna

  3. StarFire in Details • StarFire evolved from being a set of regional DGPS networks to a global network offering unprecedented accuracy. • Seven major components of StarFire • Reference Network – reference receivers that continuously provide the raw GPS observables to the Hubs for processing. • Processing Hubs – facilities at which the GPS observables are processed into DGPS corrections. • Communication Links – provide reliable transport mechanisms for the GPS observables and for the computed corrections. • Land Earth Stations – satellite uplink facilities that send the correction data received from the Hubs to the geostationary satellites. • Geostationary Satellites – used to distribute the corrections to users via L-band broadcasts. • Monitors – user receivers distributed throughout the world that use the broadcast corrections and provide their navigation information to the Hubs in real time. • User Equipment – uses the broadcast corrections along with local GPS observables to produce very precise navigation.

  4. StarFire at Work

  5. StarFire’s Positioning Accuracy • The real time global accuracy of StarFire is unprecedented. StarFire’s Performance in Australia StarFire’s Performance in USA

  6. StarFire Applications, Present and Future • The Starfire system was originally developed by John Deere for agricultural applications, including • yield mapping, • field documentation, • operator assisted steering, • automatic steering. • The characteristics of StarFire can prove useful in many other applications, including: • Land survey and geodesy • Geographic Information Systems (GIS) • Utility mapping and real time asset location • Construction equipment guidance and control • Marine survey and resource exploration • Aerial Photogrammetry • Geophysical land seismic exploration • Automated maritime docking

  7. Questions

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