Options for Acquiring Elevation Data

Abstract

The Geographic Resources Analysis Support System (GRASS) is a geographic information and image processing system originally designed to serve land managers and environment planners at Army installations. New GRASS applications demand the ability to create useful, accurate, and current digital map layers. A digital elevation data file consists of a sampled array of elevations for ground positions, generally at regularly spaced intervals. Legal boundaries, roads, hydrography, soils, watersheds, and elevation are only a few of the layers developed for GRASS databases by U.S. government and private sources. This report gives a short evaluative summary of the digital elevation products available from: 1) The Defense Mapping Agency, 2) The U.S. Geological Survey, and 3) private companies. Keywords: Information processing; Digital maps.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1989
Accession Number
ADA220934

Entities

People

  • Pam Thompson
  • Stuart Bradshaw

Organizations

  • Construction Engineering Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Availability
  • Cartography
  • Commerce
  • Computer Science
  • Construction
  • Digital Data
  • Digital Elevation Models
  • Digital Maps
  • Elevation
  • Engineering
  • Engineers
  • Geographic Regions
  • Geography
  • Geological Surveys
  • Image Processing
  • Information Processing
  • United States

Readers

  • Computer Vision.
  • Emergency Management and Homeland Security.
  • Environmental Remediation and Restoration.

Technology Areas

  • Space