Global Positioning Systems Technology as Related to Several Bureau of ReclamationStudies

摘要

The report gives a basic explanation of GPS (global positioning systems),discusses three case studies performed by the Bureau of Reclamation, and gives recommendations to potential users of GPS technology. A low precision GPS receiver was used to navigate to water quality sampling sites in a marsh in southern Oregon and assist in a Landsat TM (thematic mapper) classification of irrigated areas in western Montana. High precision survey GPS receiver were used to determine the coordinates and elevations of salvage wells in south central Colorado.