Geocentric translation by Grid Interpolation (IGN)
ARAMCO_AAA-KSAGRF_6.tac
Accuracy 5-10 cm.
General Commission for Survey (GCS).
2020-03-20
Engineering survey, topographic mapping.
Replaced by MTRF-2000 / UTM zone 37N (CRS code 8837).
Saudi Arabia - onshore between 36°E and 42°E.
Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["Ain el Abd / UTM zone 37N", BASEGEOGCRS["Ain el Abd", DATUM["Ain el Abd 1970", ELLIPSOID["International 1924",6378388,297, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4204]], CONVERSION["UTM zone 37N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",39, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Saudi Arabia - onshore between 36°E and 42°E."], BBOX[16.59,36,32.16,42]], ID["EPSG",20437]]], TARGETCRS[ GEOGCRS["KSA-GRF17", DATUM["Kingdom of Saudi Arabia Geodetic Reference Frame 2017", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], USAGE[ SCOPE["Geodesy, cadastre, engineering survey, topographic mapping."], AREA["Saudi Arabia - onshore and offshore."], BBOX[16.29,34.44,32.16,55.67]], ID["EPSG",9333]]], ABRIDGEDTRANSFORMATION["Ain el Abd to KSA-GRF17 (2)", METHOD["Geocentric translation by Grid Interpolation (IGN)", ID["EPSG",1087]], PARAMETERFILE["Geocentric translation file","ARAMCO_AAA-KSAGRF_6.tac"], USAGE[ SCOPE["Geodesy."], AREA["Saudi Arabia - onshore."], BBOX[16.37,34.51,32.16,55.67]], ID["EPSG",9363], REMARK["Accuracy 5-10 cm."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "Ain el Abd / UTM zone 37N", "base_crs": { "name": "Ain el Abd", "datum": { "type": "GeodeticReferenceFrame", "name": "Ain el Abd 1970", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4204 } }, "conversion": { "name": "UTM zone 37N", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": 39, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9996, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 500000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 20437 } }, "target_crs": { "type": "GeographicCRS", "name": "KSA-GRF17", "datum": { "type": "GeodeticReferenceFrame", "name": "Kingdom of Saudi Arabia Geodetic Reference Frame 2017", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 9333 } }, "transformation": { "name": "Ain el Abd to KSA-GRF17 (2)", "method": { "name": "Geocentric translation by Grid Interpolation (IGN)", "id": { "authority": "EPSG", "code": 1087 } }, "parameters": [ { "name": "Geocentric translation file", "value": "ARAMCO_AAA-KSAGRF_6.tac", "id": { "authority": "EPSG", "code": 8727 } } ], "id": { "authority": "EPSG", "code": 9363 } } }
Definition: Mapnik
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