|Surveyors and map makers use GPS for precision positioning. GPS is often used to map the location of
such facilities as telephone poles, sewer lines, and fire hydrants. Surveyors use GPS to map construction
sites and property lines. Forestry, mineral exploration, and wildlife habitat management all use GPS to
precisely define positions of important assets and to identify changes.
During data collection, GPS points can be assigned codes to identify them as roads, streams, or other objects. These data can then be compared and analyzed in computer programs called Geographic Information Systems (GIS).
Surveying With GPS
Set Your Watch!
Before GPS | GPS Revolution | How GPS Works | Land and Sea Navigation
Navigation In The Air | Mapping The Earth | Managing The Land | New Frontiers in Science
GPS: A New Constellation
National Air and Space Museum