EPSG Dataset :: v12.003

Geocentric translations (geocentric domain)

Coordinate Operation Method Details [VALID]

Name:

Geocentric translations (geocentric domain)

Code:

1031

Operation is Reversible:

Yes

Formula:

Note: These formulas have been transcribed from EPSG Guidance Note #7-2. Users are encouraged to use that document rather than the text which follows as reference because limitations in the transcription will be avoided.

Xt = Xs + dX; Yt = Ys + dY; Zt = Zs + dZ

Example:

Given a three parameter datum shift from WGS 84 to ED50 for this North Sea area is given as
dX = +84.87m, dY = +96.49m, dZ = +116.95m.

The given WGS 84 geocentric values are:

XA = 3771 793.97m
YA = 140 253.34m
ZA = 5124 304.35m

Applying the three geocentric translations to these source CRS coordinates we obtain new geocentric values now related to the target CRS ED50:

XB = 3771 878.84m
YB = 140 349.83m
ZB = 5124 421.30m

Method
Parameters:

Parameter Name	Parameter Code	Sign reversal	Parameter Description
X-axis translation	8605	Yes	The difference between the X values of a point in the target and source coordinate reference systems.
Y-axis translation	8606	Yes	The difference between the Y values of a point in the target and source coordinate reference systems.
Z-axis translation	8607	Yes	The difference between the Z values of a point in the target and source coordinate reference systems.

Meta Data

Remarks:

This method allows calculation of geocentric coords in the target system by adding the parameter values to the corresponding coordinates of the point in the source system. See methods 1035 and 9603 for similar tfms operating between other CRSs types.

Information Source:

EPSG guidance note #7-2, http://www.epsg.org

Data Source:

EPSG

Revision Date:

November 17, 2009

Change ID:

[2009.083]

Alias:

Alias	Naming System	Remarks
Geocentric translations	EPSG alias	This name is ambiguous as it makes no distinction between the domain of the source and target CRSs. See also methods 1035 and 9603.

Wildcard	Example
% or *	Any wildcard characters
? or _	One wildcard character
[ - ]	[ - ] Range e.g. N[a-c] will return all geodetic objects that contains a string starting with the letter 'N' or 'n' followed by any of the letters contained within the range specified within the square bracket, e.g. letters a, b and c.
\|	Or e.g. E[a\|e]M will return all geodetic objects that contains a string starting with the letter E(e), ends with the letter M(m) and also contain either the letter a or letter e.