national spatial reference system: present and future
DESCRIPTION
National Spatial Reference System: Present and Future. Marti Ikehara, Geodetic Advisor NOAA’s NGS, Sacramento [email protected]. National Geodetic Survey Mission. To define, maintain and provide access to the National Spatial Reference System (NSRS) - PowerPoint PPT PresentationTRANSCRIPT
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National Spatial Reference System: Present and Future
Marti Ikehara, Geodetic Advisor
NOAA’s NGS, Sacramento
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To define, maintain and provide access to the National Spatial Reference System (NSRS) to meet our Nation’s economic, social and environmental needs.
National Geodetic Survey Mission
• Latitude• Longitude• Height• Scale• Gravity• Orientation• Time Variations
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NOAA’s Geospatial Foundation
NOAA’s National Geodetic Survey provides the geospatial underpinning that allows integration of all georeferenced data layers. The positional framework we provide is crucial to supporting the agency’s and the nation’s data collection, validation, and updating efforts.
Geodetic Control
Aerial Imagery
Elevation
Boundaries
Surface Waters
Transportation
Land Ownership
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The NSRS Supports:
United States Geological Survey
USGS uses the NSRS to geospatially reference their Topographic Maps
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The NSRS Supports:
FEMA uses NSRS elevations to
determine flood zones for the
National Flood Insurance Program
Federal Emergency Management Agency
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The NSRS Supports:
NSRS positioning data provides the
reference for NOAA’s Nautical Charts,
among many other geospatial
applications.
National Oceanic and Atmospheric Administration
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How We Maintain and Modernize the NSRS GPS/GNSS Receivers Leveling Geoid Modeling
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National Adjustment 2011: 1983-2011
Updating the NSRS over Time
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Epoch 2007.00(only) 3 years
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Geodetic Reference Framespast and present
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NAD83 (HARN) Datum Tags and Epochs in CA
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To define, maintain and provide access to the National Spatial Reference System (NSRS) to meet our Nation’s economic, social and environmental needs.
National Geodetic Survey Mission
• Latitude• Longitude• Height• Scale• Gravity• Orientation• Time Variations
GNSS reference frame
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GEOID12 (with OPUS data) geoid heights
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Coming Soon: Error Maps for GEOID12A
Rigorous LSC was used in GEOID12A
This ensured we had a var-cov matrix to estimate errors on a regular grid
This means errors can be provided with geoid heights
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Gravity for the Redefinition of the American Vertical Datum (GRAV-D) Progress
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Geodesy.noaa.gov or ngs.noaa.gov
16
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NGS 10-year Plan:2013-2023
1. Support users of NSRS2. Modernize and improve
NSRS3. Expand NSRS
Stakeholder Base4. Develop NGS Workforce
Marti Ikehara
(916) 227-7325
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DSWorld: mapping tool and more• Need to have Google Earth installed• Tools, Download PC Software, USER-CONTRI-
BUTED SOFTWARE, DSWorld• http://www.ngs.noaa.gov/PC_PROD/PARTNERS/
index.shtml
• FIRST: Tools, Update program • Enhancement enables you to distinguish VERTCON
NAVD88 from other(control) NAVD88