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A geodetic CRS (e.g. EPSG 4326) relates a (lat/long) ellipsoidal coordinate system to the Earth.
Usually the information about the geodetic reference datum is specified once for the whole AIP and not provided for each individual position.
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| The Coordinate Reference System (CRS) is critical for the correct encoding and processing of the geographical data contained in AIXM/GML files. The CRS indicates not only the geodetic reference datum, but also the order of the coordinate axes (latitude/longitude or longitude/latitude) and has important implications for the convention used for measuring angles (from the North, clockwise, for example). |
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