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Method: Geographic2D with Height Offsets
Remarks:
Information source: http://vldb.gsi.go.jp/sokuchi/coordinates/localtrans.html (Geographical Survey Institute).
Revision date: 2020-03-14
Geodetic CRS: Tokyo + JSLD69 height
Data source: EPSG
Information source: OGP
Revision date: 2014-05-01
Scope: Engineering survey, topographic mapping.
Remarks: Replaced by JGD2000 + JGD2000 (vertical) (CRS code 6696) from April 2002).
Area of use: Japan - onshore mainland - Honshu, Shikoku, Kyushu.
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ COMPOUNDCRS["Tokyo + JSLD69 height", GEOGCRS["Tokyo", DATUM["Tokyo", ELLIPSOID["Bessel 1841",6377397.155,299.1528128, 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]]], VERTCRS["JSLD69 height", VDATUM["Japanese Standard Levelling Datum 1969"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Japan - onshore mainland - Honshu, Shikoku, Kyushu."], BBOX[30.94,129.3,41.58,142.14]], ID["EPSG",7414]]], TARGETCRS[ GEOGCRS["WGS 84", ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)"], MEMBER["World Geodetic System 1984 (G730)"], MEMBER["World Geodetic System 1984 (G873)"], MEMBER["World Geodetic System 1984 (G1150)"], MEMBER["World Geodetic System 1984 (G1674)"], MEMBER["World Geodetic System 1984 (G1762)"], MEMBER["World Geodetic System 1984 (G2139)"], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[2.0]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy. Navigation and positioning using GPS satellite system."], AREA["World."], BBOX[-90,-180,90,180]], ID["EPSG",4979]]], ABRIDGEDTRANSFORMATION["Tokyo + JSLD height to WGS 84 (21)", METHOD["Geographic2D with Height Offsets", ID["EPSG",9618]], PARAMETER["Latitude offset",8.98, ID["EPSG",8601]], PARAMETER["Longitude offset",-13.59, ID["EPSG",8602]], PARAMETER["Geoid undulation",30.9, ID["EPSG",8604]], USAGE[ SCOPE["Medium accuracy applications."], AREA["Japan - 42°40'N to 43°20'N; 142°E to 143°E."], BBOX[42.66,142,43.34,143]], ID["EPSG",15610]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "CompoundCRS", "name": "Tokyo + JSLD69 height", "components": [ { "type": "GeographicCRS", "name": "Tokyo", "datum": { "type": "GeodeticReferenceFrame", "name": "Tokyo", "ellipsoid": { "name": "Bessel 1841", "semi_major_axis": 6377397.155, "inverse_flattening": 299.1528128 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] } }, { "type": "VerticalCRS", "name": "JSLD69 height", "datum": { "type": "VerticalReferenceFrame", "name": "Japanese Standard Levelling Datum 1969" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] } } ], "id": { "authority": "EPSG", "code": 7414 } }, "target_crs": { "type": "GeographicCRS", "name": "WGS 84", "datum_ensemble": { "name": "World Geodetic System 1984 ensemble", "members": [ { "name": "World Geodetic System 1984 (Transit)", "id": { "authority": "EPSG", "code": 1166 } }, { "name": "World Geodetic System 1984 (G730)", "id": { "authority": "EPSG", "code": 1152 } }, { "name": "World Geodetic System 1984 (G873)", "id": { "authority": "EPSG", "code": 1153 } }, { "name": "World Geodetic System 1984 (G1150)", "id": { "authority": "EPSG", "code": 1154 } }, { "name": "World Geodetic System 1984 (G1674)", "id": { "authority": "EPSG", "code": 1155 } }, { "name": "World Geodetic System 1984 (G1762)", "id": { "authority": "EPSG", "code": 1156 } }, { "name": "World Geodetic System 1984 (G2139)", "id": { "authority": "EPSG", "code": 1309 } } ], "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "accuracy": "2.0", "id": { "authority": "EPSG", "code": 6326 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" }, { "name": "Ellipsoidal height", "abbreviation": "h", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 4979 } }, "transformation": { "name": "Tokyo + JSLD height to WGS 84 (21)", "method": { "name": "Geographic2D with Height Offsets", "id": { "authority": "EPSG", "code": 9618 } }, "parameters": [ { "name": "Latitude offset", "value": 8.98, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8601 } }, { "name": "Longitude offset", "value": -13.59, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8602 } }, { "name": "Geoid undulation", "value": 30.9, "unit": "metre", "id": { "authority": "EPSG", "code": 8604 } } ], "id": { "authority": "EPSG", "code": 15610 } } }
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