Inc. is a geographic data solutions provider located in Centennial,
Colorado. Established in 1994 and incorporated in November 2003,
CompassData specializes in collecting and reselling high-quality,
spatially-accurate data for Geographic Information Systems (GIS)
applications, as well as photogrammetry and emergency dispatch
systems. CompassData uses the latest in Global Positioning System
(GPS) technology combined with years of field experience and a
proven system to ensure the accuracy of our data and our customer's
CompassData specializes in collecting and reselling high quality
ground control points (GCPs) for the orthorectification of aerial
and satellite imagery. CompassData collects ground control on
behalf of leading vendors of aerial and satellite imagery. CompassData
has collected many 1000s of GCPs across North and South America,
Africa, and Europe.
CompassData uses existing features on the ground, such as sidewalk
intersections, to establish unambiguous, photo-identifiable GCPs.
CompassData uses the latest in GPS technology combined with years
of field experience and a proven system to ensure the accuracy
of each GCP. CompassData uses a combination of Trimble mapping-grade
and survey-grade GPS receivers, depending on the accuracy required.
CompassData can evaluate the accuracy of an existing GIS data
set by taking measurements in the field and recording attribute
data. Data Verification, also known as “ground truth”,
is the best way to ensure that your existing data set is complete.