Original AI Prompt
Generate & Play Hailuo AI video：In Italy, the ellipsoid used for geodetic purposes is a mathematical model that approximates the shape of the Earth. Currently, the ellipsoid widely used in Italy (and across Europe) is GRS80 (Geodetic Reference System 1980) or the very similar WGS84 (World Geodetic System 1984). The main information is as follows: 1. WGS84 (worldwide system - GPS basis): • Equatorial radius (a): 6,378,137.0 m • Flattening (f): 1 / 298.257223563 • This ellipsoid is compatible with modern systems like GPS and Google Maps. 2. GRS80: • Equatorial radius (a): 6,378,137.0 m • Flattening (f): 1 / 298.257222101 • This ellipsoid is used as the basis for the ETRS89 (European Terrestrial Reference System 1989) - that is, for the official coordinate systems in European countries. The system officially used in Italy is ETRS89, which is based on the GRS80 ellipsoid. Previously, the International 1924 (Hayford) ellipsoid was also used in older systems.
AI-Powered Analysis
Explains the use of ellipsoids in geodetic systems, focusing on Italy's use of GRS80 and WGS84.
