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Monthly Archives: August 2008
State Plane Coordinate System
The State Plane Coordinate System (SPCS) was developed in the 1930s by the U.S. Coast and Geodetic Survey to provide a common reference system for surveyors and mappers. The goal was to design a conformal mapping system for the country … Continue reading
Posted in earth, GIS, GPS, map making, Remote Sensing 101
1 Comment
UTM – Universal Transverse Mercator Geographic Coordinate System
Projections are a mathematical way of representing 3D earth on a 2D plane.The idea of the transverse mercator projection has its roots in the 18th century, but it did not come into common usage until after World War II. It … Continue reading
Posted in Class Notes, earth, GIS, GPS, map making, Remote Sensing 101, Solar System
4 Comments
Geographic Coordinate System
One of the most common coordinate systems in use is the Geographic Coordinate System, which uses degrees of latitude and longitude to describe a location on the earth’s surface. Lines of latitude run parallel to the equator and divide the … Continue reading
Posted in GIS, GPS, map making, Remote Sensing 101, Solar System
3 Comments
Grid Systems for Maps
A grid system allows the location of a point on a map (or on the surface of the earth) to be described in a way that is meaningful and universally understood. Projecting the earth’s surface (or a portion of it) … Continue reading
Posted in map making, Remote Sensing 101, topography
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