Coordinate Reference
Frames
This section describes each of the coordinate reference frame types currently supported by GEOTRANS.
Global Area Reference System (GARS)
Coordinates
Military Grid Reference System (MGRS) Coordinates
United States National Grid (USNG)
Coordinates
Universal Transverse Mercator (UTM) Coordinates
Universal Polar Stereographic (UPS) Coordinates
Albers Equal Area Conic Projection
Azimuthal Equidistant Projection
British National Grid Coordinates
Cylindrical Equal Area Projection
Equidistant Cylindrical Projection
Lambert Conformal Conic (1
parallel) Projection
Lambert Conformal Conic (2 parallel) Projection
New Zealand Map Grid Projection
Ney's (Modified Lambert Conformal Conic) Projection
Polar Stereographic Projection
Transverse Cylindrical Equal Area Projection
Transverse Mercator Projection
F-16 Grid Referense System Coordinates
Parameters:
None.
Coordinates:
X – the X coordinate value, in meters,
Y – the Y coordinate value, in meters, and
Z – the Z coordinate value, in meters.
Parameters:
None.
Coordinates:
X – the X coordinate value, in meters,
Y – the Y coordinate value, in meters, and
Z – the Z coordinate value, in meters.
Parameters:
Height Type – the type of the height values used, No Height, Ellipsoid Height, MSL-EGM96-15M-BL Height (recommended), MSL-EGM96-VG-NS Height, MSL-EGM84-10D-BL Height, or MSL-EGM84-10D-NS Height,
Coordinates:
Latitude – the Latitude value, in degrees, degrees/minutes, or degrees/minutes/seconds,
Longitude – the Longitude value, in degrees, degrees/minutes, or degrees/minutes/seconds, and
Height – the height above the reference surface, in meters.
Parameters:
None.
Coordinates:
GEOREF Coordinate String – an alphanumeric string made up of four letters followed by up to ten digits.
Parameters:
None.
Coordinates:
GARS Coordinate String – an alphanumeric string made up of three digits, followed by two letters and two digits.
Mercator Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Latitude_of_True_Scale – a latitude value that specifies the parallel where the point scale factor is 1.0,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the equator).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Note: The Scale Factor field is an output field. The Scale Factor value is calculated and displayed based on the ellipsoid parameters and the Latitude of True Scale.
Transverse
Mercator Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the parallel where the point scale factor is 1.0,
Scale Factor – a real number between 0.3 and 3.0 that specifies the projection scale factor, the ratio between distances in the projection and distances on the surface of the reference ellipsoid,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the equator).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Universal Transverse
Mercator (UTM) Coordinates
Parameters:
None.
Coordinates:
Zone – the UTM zone number,
Hemisphere – the hemisphere ('N' or 'S'),
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Zone Override:
Override – In the Output Area, allows you to specify in which UTM zone the output coordinates will be located.
Polar
Stereographic Projection
Parameters:
Longitude Down from Pole – a longitude value that specifies the orientation of the projection,
Latitude of True Scale – the latitude at which the scale factor is one,
False Easting – a coordinate value in meters that specifies the Easting/X coordinate at the origin of the projection (i.e., the pole), and
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the pole).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Universal Polar
Stereographic (UPS) Coordinates
Parameters:
None.
Coordinates:
Hemisphere – the hemisphere ('N' or 'S'),
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Military Grid Reference
System (MGRS) Coordinates
Parameters:
None.
Coordinates:
MGRS Coordinates – an alphanumeric string made up of from zero to two digits, followed by three letters, followed by up to ten digits.
Parameters:
None.
Coordinates:
USNG Coordinates – an alphanumeric string made up of from zero to two digits, followed by three letters, followed by up to ten digits.
Albers Equal Area Conic Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
1st Standard Parallel – a latitude value that specifies one of the two the parallels where the point scale factor is 1.0,
2nd Standard Parallel – a latitude value that specifies one of the two the parallels where the point scale factor is 1.0,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Azimuthal
Equidistant Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
British National
Grid Coordinates
Parameters:
None.
Coordinates:
BNG Coordinate String – an alphanumeric string made up of two letters followed by up to ten digits.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Cylindrical
Equal Area Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Equidistant
Cylindrical Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Lambert
Conformal Conic (1 parallel) Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
Scale Factor – a real number between 0.3 and 3.0 that specifies the projection scale factor, the ratio between distances in the projection and distances on the surface of the reference ellipsoid,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Lambert
Conformal Conic (2 parallel) Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
1st Standard Parallel – a latitude value that specifies one of the two the parallels where the point scale factor is 1.0,
2nd Standard Parallel – a latitude value that specifies one of the two the parallels where the point scale factor is 1.0,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Note
that when the two standard parallel parameters are both set to the same
latitude value, the result is a Lambert Conformal Conic projection with one
standard parallel at the specified latitude.
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X coordinate
at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
None.
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Ney's (Modified
Lambert Conformal Conic) Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
1st Standard Parallel – a latitude value that specifies one of the two the parallels where the point scale factor is 1.0,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Note: The 2nd Standard Parallel field is a read only field. The 2nd Standard Parallel value is fixed at 89 59 59.0.
Parameters:
Origin Latitude – a latitude value that specifies the vertical center of the projection,
Latitude 1 – latitude of the first point lying on the central line of the projection,
Longitude 1 – longitude of the first point lying on the central line of the projection,
Latitude 2 – latitude of the second point lying on the central line of the projection,
Longitude 2 – longitude of the second point lying on the central line of the projection,
Scale Factor – a real number between 0.3 and 3.0 that specifies the projection scale factor, the ratio between distances in the projection and distances on the surface of the reference ellipsoid,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X coordinate
at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Transverse
Cylindrical Equal Area Projection
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
Origin Latitude – a latitude value that specifies the vertical center of the projection,
Scale Factor – a real number between 0.3 and 3.0 that specifies the projection scale factor, the ratio between distances in the projection and distances on the surface of the reference ellipsoid,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
Parameters:
Central Meridian – a longitude value that specifies the horizontal center of the projection,
False
Easting – a coordinate value in meters that specifies the Easting/X
coordinate at the origin of the projection (i.e., the
False Northing – a coordinate value in meters that specifies the Northing/Y coordinate at the origin of the projection (i.e., the Origin Latitude).
Coordinates:
Easting/X – the Easting/X coordinate value, in meters, and
Northing/Y – the Northing/Y coordinate value, in meters.
F-16 Grid
Reference System Coordinates
Parameters:
None.
Coordinates:
F-16 GRS Coordinates - an alphanumeric string made up of from zero to two digits, followed by three letters, followed by up to ten digits.