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Abstract
Using Dense Ground Control to Compare LIDAR and IFSAR DEMs
Track: Remote Sensing Imagery
Author(s): Robert Norheim, Ralph Haugerud, Vivian Queija
This paper will discuss the differences between DEMs generated by LIDAR and IFSAR in an area with a dense network of ground control points. Both will also be compared with the DEM from the Shuttle Radar Topography Mission. Also, the effect of land cover (which ranges from pasture to dense conifer forest in the study area) on the accuracy of both methods will be examined, as will any spatial patterns in the survey errors. Also, effects of the difference of the GPS technique of the ground control points on accuracy will be discussed (survey-grade differential, real-time kinematic, and total station techniques were all employed).
Robert Norheim
University of Washington/USGS
Cascadia Field Station
College of Forest Resources
Box 352100
Seattle , WA 98195-2100
USA
Phone: 206 543-9138
Fax: 206 543-3254
E-mail: norheim@u.washington.edu
Ralph Haugerud
USGS-Geologic Division
Seattle Field Office
University of Washington, Dept. of Earth Sciences
Box 351310
Seattle 98195-1310
USA
Phone: 206 553-5542
Fax: 206-543-3836
E-mail: rah@geophys.washington.edu
Vivian Queija
USGS-National Mapping Discipline
Northwest Geographic Science Team
909 First Avenue, Suite 420
Seattle 98104
USA
Phone: 206.220.4072
Fax: 206.220.4072
E-mail: vqueija@usgs.gov