Draft resource record: This item is in development and has not officially been published.

Dataset Record: NEXTMap USA

Project: NEXTMap USA
Data Type: Elevation
Source: IFSAR - Interferometric Synthetic Aperture Radar
Type: Gridded raster
Nominal post spacing: ---
Rectification: No response provided
Data collection start date: January 1, 2005
Data collection end date: December 30, 2006
Update frequency: As needed
Distribution restrictions: Yes, with some restrictions
License: --
Surface description: Bare earth
Datum, vertical: NAVD 88 - North American Vertical Datum of 1988
Datum, horizontal: NAD 83 (96) - North American Datum of 1983 with 1996 adjustment
Ellipsoid: GRS - Geodetic Reference System of 1980
Break lines: All significant breaks in slope
Ground resolution: No response provided
Vertical accuracy: Yes- 1 Meters
Test of vertical accuracy: Yes
Horizontal accuracy: Yes- 2 --
Test of horizontal accuracy: Yes
Control monuments: Yes
Data formats (file size):
  • ASCII - American Standard Code for Information (10 Mb to less than 100 Mb)
  • GeoTIFF - Geographic Tag Image File Format (10 Mb to less than 100 Mb)
  • Gridded Raster (10 Mb to less than 100 Mb)
Footprint:
Metadata: Yes
Metadata standard: Federal Geographic Data Committee
Identifier: www.intermap.com
Notes: Data will be available for sales starting in 2008.

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