The GPS is a Global Positioning System that uses a constellation of satellites orbiting Earth at 20,200 km.
In addition to high precisions that it reaches compared to other traditional methods of geo-positioning, it has many advantages such as:
Optimize productivity, speed, and economy of conventional equipment.
No need intervisibility between points to be determined.
You can work day and night, with rain and fog.
All work can be performed by a single operator.
It allows to work with local and geographical coordinates at the same time and in the same project.
You can gelocate without taking geodesic points when they are inaccessible through permanent active bases or radio beacons.
Capture position and data simultaneously, being ideal for development and maintenance of GIS tools.