The cylinder is secant in the UTM projection it intersects the globe creating two standard meridians that are 180 km to each side of the central meridian. The meridian at the center of each zone is called the central meridian. In such a projection, instead of projecting the complete globe into a flat surface, each of the 60 strips or zones gets projected onto a plane separately, therefore minimizing scale distortion within each zone. In the UTM projection the transverse cylinder rotates by 6° increments, thus creating 60 (360° / 6°) strips or projection zones. The cylinder in the Transverse Mercator projection is tangent along a meridian (line of longitude) or it is secant, in which case it cuts through the earth at two standard meridians. Home > Education > UTM - Universal Transverse Mercator UTM - Universal Transverse Mercator UTM ProjectionĪs the name suggests, the Universal Transverse Mercator projection is based on the cylindrical Transverse Mercator projection.
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