Most GNSS modules out there, designed for recreational use in everyday consumer devices, are GNSS-L1 modules. However, they do not necessarily offer the characteristics needed to establish the precise position of an object on the territory with an accuracy of just a few centimetres.
Since the beginning of the new millennium, GPS professionals have impatiently been waiting for all new GPS signals to be fully deployed. What about the current state of the Global Navigation Satellite Systems?
In many cases, the positions do not always fall at the right place when they are integrated into geographical information systems (GIS). Unfortunately, it is often at this stage that we call on a specialist! The key is in the reference system, also known as datum.