Abstract: Digital Surface Model (DSM) is an autocorrelated surface that represents the tops of surfaces. The autocorrelated data is in its rawest form. The data is made up of sampled arrays of pixels depicting surface elevations in raster form. This data was captured as an ancillary product of a statewide ortho image acquisition using a Lecia ADS40 sensor. The primary DSM is a 5-meter ground resolution, produced in 5 large blocks covering the entire State, cast on the Universal Transverse Mercator projection (UTM) on the North American Datum of 1983 (NAD83). This series of DSM's was produced as a part of the 2006 Arkansas Digital Orthophotography Program administered by the Arkansas State Land Information Board and the Arkansas Geographic Information Office. The aerial imaging data used to create the DSM was acquired between January 15th and March 31st in 2006.
Purpose: Data available online through GeoStor at http://www.geostor.arkansas.gov DSM's serve a variety of purposes including, the extraction of feature measurements, three dimensional visualization, maps, field references for Earth science investigations and analysis. The DSM is useful as a layer of a geographic information system.
Supplemental Information: The 2006 DSM's were captured with an ADS40 sensor. Users may wish to conduct additional value added processing for other purposes. Derived products can be generated in numerous ways. To this end the AGIO and EarthData International will refrain from speculating what products might be achieved with additional processing. Limited manual intervention was used during the development of this product and therefore all cell values should be checked and verified by the user prior to use.

Progress: Complete
Update Frequency: Irregular

Theme Keywords: ISO 19115 Topic Category, elevation, Arkansas Geographic Information Office, surface, model, dsm
Place Keywords: United States, Arkansas

Access Constraints: NONE
Usage Constraints: NONE