http://www.fsa.usda.gov/FSA/apfoapp?area=home&subject=maps&topic=arc
DOQQ's are digital aerial images produced by the USGS. They contain orthorectified aerial photography at a resolution of 1 meter. DOQQ is an acronym for Digital Orthophoto Quarter Quads. It is geometrically corrected so that the scale is uniform. With the scale being uniform, it can be used to actually measure distances because it is an actual representation of the Earth.
No comments:
Post a Comment