Title :
The acquisition and application of digital elevation data using GIS and remote sensing
Author :
Trotter, C.M. ; Dymond, J.R.
Author_Institution :
Landcare Res. New Zealand, Palmerston North, New Zealand
Abstract :
Topographic data are one of the key attributes in natural resource information systems. Several techniques exist which have the potential to provide low cost topographic data at scales useful for natural resource management-automatic image matching, radar altimetry, and radar interferometry. The current status of these techniques is briefly reviewed, and it is concluded that image matching-in particular-now offers good opportunities for the generation of digital elevation models (DEMs). This has been demonstrated by using commercially available image matching software to produce a DEM of a steepland catchment from 1:6000 scale, non-metric aerial photography, with a RMS error of 2.7 m
Keywords :
geographic information systems; geophysical techniques; geophysics computing; image sequences; natural resources; radioaltimeters; radiowave interferometry; remote sensing by radar; topography (Earth); DEM; GIS; acquisition; digital elevation data; digital elevation models; image matching; natural resource information systems; natural resource management-automatic image matching; nonmetric aerial photography; radar altimetry; radar interferometry; remote sensing; steepland catchment; topographic data; Altimetry; Costs; Digital elevation models; Geographic Information Systems; Image matching; Management information systems; Photography; Radar imaging; Radar interferometry; Resource management;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322432
