AT.
Aerial Triangulation.
b/h.
Eye-base to height ratio.
CCD.
Charge-Coupled Device.
DEM.
Digital Elevation Model.
DPW.
Digital Photogrammetric Workstation.
DSM.
Digital Stereo Model.
DTM.
Digital Terrain Model.
GCP.
Ground Control Point.
GIS.
Geographic Information System.
GPS.
Global Positioning System.
INS.
Inertial Navigation System.
ISPRS.
International Society of Photogrammetry and Remote Sensing.
Lat/Lon.
Latitude/Longitude.
LRX.
Lower Right X.
LRY.
Lower Right Y.
MrSid
Multi-resolution Seamless Image Database
RMSE.
Root Mean Square Error
SCBA.
Self-calibrating Bundle Adjustment
SI.
Image scale.
TIN.
Triangulated Irregular Network
ULX.
Upper Left X.
ULY.
Upper Left Y.
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Terminology
Aerial Triangulation (AT)
The
process of establishing a mathematical relationship between images, the camera or sensor model, and the ground. The information derived is necessary for orthorectification, DEM generation, and stereopair creation. This term is used when processing frame camera, digital camera, videography, and nonmetric camera imagery. See more 
Digital Elevation Model (DEM).
Continuous raster layers in which data file values represent elevation. DEMs are available from the USGS at 1:24,000 and 1:250,000 scale, and can be produced with terrain analysis programs such as IMAGINE OrthoMAX™ and IMAGINE OrthoBASE Pro. See more  Digital Stereo Model (DSM).
Stereo models that use imaging techniques of digital photogrammetry that can be viewed on desktop applications. See more
Geographic Information System (GIS).
A unique system designed for a particular application that stores, enhances, combines, and analyzes layers of geographic data to produce interpretable information. A GIS may include computer images, hardcopy maps, statistical data, and any other data needed for a study, as well as computer software and human knowledge. GISs are used for solving complex geographic planning and management problems. A GIS consists of spatial data stored in a relational database with associated ancillary information. See more
Global Positioning System (GPS).
"A surveying method that uses a set of 24 satellites in geostationary position high above the Earth. Specially designed GPS receivers, when positioned at a point on Earth, can measure the distance from that point to three or more orbiting satellites. The coordinates of the point are determined through the geometric calculations of triangulation. GPS provides accurate geodetic data for any point on the Earth" (Natural Resources Canada 2001). See more
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