The same point is: three projectors are cylindrical projection .
Differences are as follows:
- Mercator is positive axis isometric cut cylindrical projection, i.e. it is assumed that the earth is placed in a hollow cylinder, the cylinder axis plane and the earth's latitude tangential to the rotational axis of the earth with the cylinder in parallel, and assuming that the earth has a lamp illuminating the cylindrical surface to which the projection, along the axis of the cylinder and finally to cut the projection paved obtained. Weft tangentially at the projection is not deformed.
N Mercator
- Transverse Mercator horizontal axis is an isometric cut cylindrical projection, with the warp plane tangential to the cylindrical axis of abscissa means the rotation shaft perpendicular to the cylinder axis of the Earth.
Transverse Mercator
- Universal Transverse Mercator horizontal axis is an isometric cut cylindrical projection, which uses a Cartesian coordinate system, all positions between the mark earth latitude 80 ° north latitude to 84 °. I.e. two axes respectively 80 ° latitude and latitude 84 ° north latitude with the weft cutting ends of the cylinder bottom diameter thereof.
Universal Transverse Mercator