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New Geometric Datum: plans

New Geometric Datum: plans. Modernizing the U.S. National Spatial Reference System. FGCS San Diego, California Monday 11 July 2011. Joe.Evjen@noaa.gov. Source: Zurich-American Insurance Group. Coordination begins with good coordinates. Geodetic control is the foundation

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New Geometric Datum: plans

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  1. New Geometric Datum: plans Modernizing the U.S.National Spatial Reference System FGCS San Diego, California Monday 11 July 2011 Joe.Evjen@noaa.gov

  2. Source: Zurich-American Insurance Group Coordination begins with good coordinates • Geodetic control is the foundation • for all geospatial products. Geodetic Control is the critical “basemap” layer for GIS applications

  3. How accurate is the NSRS? Crustal velocitiesPassive networks are aging(instability, accessibility, loss)

  4. NAD83vsGNSS Earth’s Surface world avg. ITRF Origin stable N.A. 2.2 meters NAD 83 ( Identically shaped ellipsoids ) Origin

  5. New geometric datum minus NAD 83 (horizontal)

  6. New geometric datum minus NAD 83 (ellipsoid height)

  7. mm/year

  8. 1.6 meter shift on a 1:25,000 map modern users abuse map scale NAD83 and GNSS lat/lon lattices are 0.006 cm apart Accurate and seamless!! Optimized for my project!!

  9. the path to a new geospatial datum • SCIENCE: • participate in international geodesy • maintain core geodetic infrastructure • define stable North America, plate motions, local issues • OUTREACH: • illustrate limitations of current system • geospatial summits with FGCS, ACSM, ION, etc. • assist key stakeholders to identify use cases, issues • TOOLS: • dependable models • GEOID, NADCON, H(+V) TDP exploitable via vendor toolkits • services for RTN operators

  10. the path to a new geospatial datum • DEFINE: • Fixed to plate at what epoch? Update frequency/tolerance? • Coordination with international community, Canada, Mexico, etc. • FGDC vote to adopt, Federal Register Notice, formal report, & FAQ • IMPLEMENT: • Products (datasheets, OPUS, GEOIDs, maps, charts, projects) • Toolkit (NADCON, TDP) and best practices • Legacy plan: how much support for USSD, NAD27, NAD83 • TIME FRAME: • Follow in synch with geopotential datum effort • Note, NAD27 is still in use.

  11. Geospatial summit 2012 • What do you want to talk about? • geodesy.noaa.gov/2010Summit/ • Presentations • Handouts • Proceedings

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