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

fYear

1993

fDate

18-21 Aug 1993

Firstpage

1713

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IGARSS.1993.322432

Filename

322432