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.