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Geodetic Reference Systems FR France Geodetic Reference System
Geodetic Reference Systems France
RGF93
NTF
ED50
ETRS89
CRS relationships FR
related information
Publications Geodetic Reference Systems FR
RGF93 under construction France Geodetic Reference System
Réseau Géodésique Francais 1993
related information
Lambert-93 on RGF93
NTF France Geodetic Reference System
graphic22. Sept. 1998 
Nouvelle Triangulation de la France (NTF): 
Ellipsoid: Clarke 1880 IGN.
Central Point: Panthéon, Paris.
related information
Lambert - NTF (1922)
CRS relationships FR
ED50 France Geodetic Reference System
graphic16.1.2012
European Datum 1950
related information
UTM - ED50
CRS relationships FR
ETRS89 France Geodetic Reference System
related information
ETRS89: European Terrestral Reference System 1989
CRS relationships FR France Geodetic Reference System
graphic16.1.12 
CRS relationships France 
Country 
Name 
Central  Point 
Spheroid 
Parameters 
Description 
Source 
 
 
 
 
dx  [m] 
dy  [m] 
dz  [m] 
rx  ["] 
ry  ["] 
rz  ["] 
ds  [ppm] 
 
 
National 
 
France 
NTF 
Pantheon,  Paris 
Clarke1880 
- 168 
- 60 
320 
0 
0 
0 
1 
NTF ->  WGS84 
France 
NTF 
Pantheon,  Paris 
Clarke1880 
- 84 
+37
+437
0 
0 
0 
1 
NTF ->  ED50 
France
ED50
 
Hayford 1924
-   84
-   97
-   117
 
 
 
 
ED50 -> WGS84
related information
Lambert - NTF (1922)
Publications FR
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