Monday, July 23, 2012

DOQQ



DOQQ stands for Digital Orthophoto Quadrangle.  A DOQQ generally shows an aerial photo with UTM coordinates overlain.  UTM coordinates are a grid-based method of specifying locations on the surface of the Earth.  The DOQQ maps are normally either black-and-white or color infrared, like the infrared aerial photos.  These DOQQ aerial photos are one-fourth of the U.S. Geological Survey's 7.5-minute quadrangle. The above image is a DOQQ map of Lake Kahola, a small water supply and recreational lake located in the Flint Hills of east-central Kansas.

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.