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How are easting and northing coordinates determined in UTM?
UTM easting and northing coordinates specify the position of a point on Earth. UTM coordinate of a point is stated by writing the zone, easting and then northing values. When finding a position on a map, it is helpful to ” read right up “, that is to read west to east to find the easting and then south to north to find the northing of the location.
How is the UTM based on the Transverse Mercator projection?
UTM Projection. As the name suggests, the Universal Transverse Mercator projection is based on the cylindrical Transverse Mercator projection. 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.
Can a projection be configured into a coordinate system?
There are dozens of projections available in ArcGIS that can be configured into countless projected coordinate systems. Your choice of a projected coordinate system depends on many factors, including the part of the world you are mapping, the scale of your map, and the purpose of your map.
How to choose the right projection for your map?
Map projections apply this distortion in a systematic way that allows you to control where and how it happens. This lesson will introduce you to tools and techniques to help you choose the right projection for your map. You will not find a projection that is suitable for all maps. All projections distort the earth in some way.
How is the Transverse Mercator used in the UTM?
The Transverse Mercator projection illustrated above (Figure 2.22.2) minimizes distortion within UTM zone 30. Fifty-nine variations on this projection are used to minimize distortion in the other 59 UTM zones. In every case, distortion is no greater than 1 part in 1,000.
Where are polar areas excluded from the UTM system?
Only polar areas–latitudes higher than 84° North and 80° South–are excluded. (Polar coordinate systems are used to specify positions beyond these latitudes.) The UTM system divides the remainder of the Earth’s surface into 60 zones, each spanning 6° of longitude.
How many variations on the UTM projection are there?
Fifty-nine variations on this projection are used to minimize distortion in the other 59 UTM zones. In every case, distortion is no greater than 1 part in 1,000. This means that a 1,000 meter distance measured anywhere within a UTM zone will be no worse than + or – 1 meter off.