Geodetic Latitude and Longitude

The geodetic maps are based on the rotation ellipsoid as surface of reference.

Analogue to the geographic latitude v and the geographic longitude u of the sphere we define the geodetic latitude B and the geodetic longitude L of the rotation ellipsoid.

geodätische Breite und Länge

The geodetic latitude of a point P is the angle B which is made up by the normal of the rotation ellipsoid in the point P and the equator plane. The geodetic longitude L of a point P coincides with the geographic longitude u of P(L = u).

Within the illustration (from [3] under literature) a meridian ellipse of the rotation ellipsoid with geodetic latitude B of the point P is shown.