Understand Global Reference Coordinates

The World Geodetic System (WGS-84) provides global reference coordinates. In order to successfully place a Quuppa system into this coordinate system, it's useful to have a basic understanding of how the coordinate system works.

As we know, the Earth is round (a spheroid) in shape. Due to this shape, the global coordinate system cannot be uniform. In practice, this means that the further you get from the equator, the higher the accuracy for longitude measurements, even though the accuracy of latitude measurements is not affected.

The number of decimals displayed for the global reference coordinates indicates the accuracy of the given coordinate. For example, a value given to 7 decimal places is accurate to 1.11 cm at the equator. The Quuppa system supports 7 decimals in WGS-84 input.

Important: Make sure that the coordinates you plan to use is based on the WGS-84 coordinate system. This feature has been designed for this coordinate system specifically.