Thread: GPS coordinates format

The spherical coordinates are measured in latitude and longitude. These angles are
measured in degrees from the center of the earth to a point on the surface.
The latitude varies from the north pole (90) decreases to the Equator (0) and decreasing
further to the south pole (-90).
The longitude varies from the Greenwich meridian (0) growing towards the east to the
meridian opposite (180) and decreases towards the west to the same meridian opposite (-
180).
Cartesian coordinates are based on a system of two orthogonal axes (x, y). The location
of a point is given by the intersection of the two values.

A coordinate might be written for example as 65° 32' 15".
Degrees can also be expressed as decimals: 65.5375,
degrees and decimal minutes: 65° 32.25'

So coordinates can be in these formats:

Degrees - coordinates expressed in decimal degrees
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GMM - coordinates expressed in degrees and decimal minutes
which can be abbreviated as DºM.M’ “Decimal minutes”, as it integrates the seconds information into the minutes of the coordinate

GMS - coordinates expressed in degrees, minutes and decimal seconds
degrees, minutes and seconds, and in this format a position can be writted as: 51º 12' 18.8? North and 0º 35' 07.8? West. You’ll sometimes see this format abbreviated as Dº M’ S” “Degree Minutes Seconds”, it is the longest format. The problem with such long formats is that its allows many places for errors and misunderstanding during communication.

UTM - coordinate expressed in UTM (east, north, zone and hemisphere)

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Rad - expressed in decimal radiant.

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• N51 12.314 and W0 35.131 is the Decimal minutes format,
• N51.20523 and W0.58551 is the same address expressed in Decimal degrees



more infos here

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and

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