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Abstract
Fusing LIDAR and IFSAR DEMs: A Seven Step Methodology
Track: Water Resources
Author(s): James Damron
Fusing or the merging of traditional cartographic and photogrammetric derived Digital Elevation Model (DEM) have numerous problems. Problems encountered with merging traditionally derived DEMs are not present in the emerging technologies used in single pass Interferometric Synthetic Aperture Radar (IFSAR) and LIght Detection And Ranging (LIDAR). IFSAR and LIDAR technologies are utilizing common INS and GPS devices which make the fusing of DEM data straight forward using any raster based GIS software package. Esri's ArcInfo software with the ARC GRID extension was used to demonstrate how this seven step methodology can be used by any raster based GIS software to fuse or merge IFSAR and LIDAR DEMs. This methodology is being tested to provide assistance to the Federal Emergency Management Agency (FEMA) for flood plain mapping. The main goal is to provide a cost effective mix of wide area coverage with a IFSAR DEM and urban/floodplain coverage with a LIDAR DEM and fuse the two DEMs into one data set. Work is still on going and is presented as an applied approach to GIS users involved in flood plain mapping and can be used for other earth science applications.
James Damron
ERDC - Topographic Engineering Center
7701 Telegraph Road
Alexandria , VA 22315
USA
Phone: 703-428-8168
E-mail: jdamron@tec.army.mil