The British National GPS Network, known as OS Net, is a network of global navigation satellite system

GNSS A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is termed global navigation satellite system (GNSS). , four global systems are op ...

base stations covering

Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...

. It is managed by

Ordnance Survey The Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see Artillery, ordnance and surveying), which was to map Scotland in the wake of the Jacobite rising of ...

. It provides access to a stable, national coordinate reference system (through downloaded GNSS data) that allows highly accurate location to be determined using suitable equipment, and is used in surveying, construction and

precision agriculture Precision agriculture (PA) is a management strategy that gathers, processes and analyzes temporal, spatial and individual plant and animal data and combines it with other information to support management decisions according to estimated varia ...

industries, among other uses. The use of ground-based stations makes this system more accurate than satellite based

GPS The Global Positioning System (GPS) is a satellite-based hyperbolic navigation system owned by the United States Space Force and operated by Mission Delta 31. It is one of the global navigation satellite systems (GNSS) that provide geol ...

systems. Using a single receiver, without any additional corrections, a civilian user can achieve a positional accuracy equal to 5 m – 10 m 95% of the time, and a height accuracy of 15 m – 20 m 95% of the time. Combined with data or corrections from a service such as OS Net, a positional accuracy of 1 – 2 cm is achievable, depending on the equipment used and environmental factors.

References

Global Positioning System Ordnance Survey {{UK-stub