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Is the GPS/GNSS Surveying and Mapping User Community Ready for SC 24? Speaker: Eric Gakstatter Contributing Editor – GP

Is the GPS/GNSS Surveying and Mapping User Community Ready for SC 24? Speaker: Eric Gakstatter Contributing Editor – GPS World Editor - Geospatial Solutions Presented at: 2011 Space Weather Workshop Boulder, CO April 26, 2011. ©Copyright 2011. GPS/GNSS Surveying and Mapping. Outline

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Is the GPS/GNSS Surveying and Mapping User Community Ready for SC 24? Speaker: Eric Gakstatter Contributing Editor – GP

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  1. Is the GPS/GNSS Surveying and Mapping User Community Ready for SC 24? Speaker: Eric Gakstatter Contributing Editor – GPS World Editor - Geospatial Solutions Presented at: 2011 Space Weather Workshop Boulder, CO April 26, 2011 ©Copyright 2011

  2. GPS/GNSS Surveying and Mapping • Outline • Who uses high-precision GNSS receivers? • Which high-precision users would likely be affected? • Are they ready? ©Copyright 2011

  3. GPS/GNSS Surveying and Mapping • Land surveying/engineering (property boundaries, road design/layout, site construction, drainage). ©Copyright 2011

  4. Machine Control • Construction (bulldozers, excavators), ship docking, ©Copyright 2011

  5. Machine Control - Example ©Copyright 2011

  6. GPS/GNSS Surveying and Mapping ©Copyright 2011

  7. GPS/GNSS Surveying and Mapping ©Copyright 2011

  8. GPS/GNSS Surveying and Mapping ©Copyright 2011

  9. GIS Mapping • Infrastructure, environment, urban/rural forestry, municipalities, utilities, natural resources, E-911. ©Copyright 2011

  10. Precision Agriculture • Field mapping, yield monitoring, auto-steer planting, variable-rate fertilizer application, crop-dusting. ©Copyright 2011

  11. GNSS Market Growth (<10cm) The value of precision GNSS products and services was ~US$3B in 2008 and projected to grow to US$6-8B by 2012, a CAGR of 19-23%. Source: Position Report – GNSS Precise Positioning Market Report – 2008-2012 ©Copyright 2011

  12. GNSS Market Growth -SBAS (WAAS/EGNOS/MSAS/GAGAN/SDCM) continue to build-out and provide free sub-meter corrections, thus stimulating market expansion for high-performance GPS L1 receivers. -Growth of RTK Networks, providing high precision GPS corrections, have exploded in the past five years with over 37 state DOT’s operating an RTK Network and over 80 total. ©Copyright 2011

  13. SBAS (WAAS) Infrastructure ©Copyright 2011

  14. World-wide SBAS ©Copyright 2011

  15. WAAS for Surveying/Mapping • WAAS provides free GPS corrections (since 2003). • Tens of thousands of surveying/mapping GPS users rely on WAAS for accurate GPS corrections daily. • WAAS accuracy has been excellent: • 24 hr data set (1 Hz), Arizona Test Site, GPS L1 Beacon: 68%= .64m, 95%=.98m, 99%=1.2m WAAS: 68%= .45m, 95%=.69m, 99%=.86m OmniSTAR VBS: 68%= .28m, 95%=.43m, 99%=.53m ©Copyright 2011

  16. WAAS for Surveying/Mapping • Advantages of WAAS/SBAS: • Free, accurate, wide coverage area, no extra hardware required. • Disadvantages of WAAS/SBAS: • Relies heavily on ionospheric modeling, only 38 reference stations cover all of North America. ©Copyright 2011

  17. RTK Networks for Surveying/Mapping • Growth of RTK Networks, providing high precision GPS corrections, have exploded in the past five years with over 37 state DOT’s operating an RTK Network and over 80 total in the U.S. • A key benefit of RTK Networks is the extended spacing between reference stations, allowing fewer GNSS reference stations to provide service to a wider area. • The extended spacing between reference stations is possible due to advanced atmospheric modeling. ©Copyright 2011

  18. RTK Networks for Surveying/Mapping ©Copyright 2011

  19. Are They Ready for SC 24? Is the GPS/GNSS Surveying and Mapping User Community Ready for SC 24? ©Copyright 2011

  20. Are They Ready for SC 24? • High-performance GPS L1 receivers have become much less expensive since SC 23. • SBAS (since 2003) have become the de facto standard for real-time GPS corrections. • World-wide RTK Networks have experienced explosive growth in the last five years. • The GPS has been extremely reliable. • Leading to… ©Copyright 2011

  21. Are They Ready for SC 24? • …a sense of confidence that it will continue to work with the same accuracy and reliability as they’ve become accustomed to. • An iono disturbance notification system is needed that’s tailored to tens of thousands of GPS surveying and mapping users. • Mainstream media raises too many red flags. • Need “stop light” simplicity. ©Copyright 2011

  22. Questions? • Questions? ©Copyright 2011

  23. The Bottom Line Are you moving towards becoming significant or are you sliding towards insignificance? Eric Gakstatter Contact Information:egakstatter@gpsworld.com Subscribe to Survey Scene and Geospatial Weekly Newsletters at www.gpsworld.com/newsletters Subscribe to GPS World Magazine at www.gpsworld.com/subscribemag ©Copyright 2011 ©Copyright 2011

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