> For the complete documentation index, see [llms.txt](https://docs.premium-positioning.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.premium-positioning.com/welcome.md).

# Welcome

Premium Positioning documentation: how RTK Premium corrections work, how to connect a receiver, and how to choose the right correction method for the job.

Premium Positioning is a GNSS correction service based in Utrecht, the Netherlands. We deliver real-time and post-processed corrections that take satellite positioning from several metres down to under 1.5 cm horizontal, 2.5 cm vertical, across more than 35 countries globally.

RTK Premium, our flagship network RTK service, runs on more than 7,500 base stations. [Products](/products.md) compares it with RTK Core, RTK Access and RTK Seas. This documentation explains how the corrections work, how to connect to them, and how to choose the right method for your job.

### The network at a glance

* Under 1.5 cm horizontal, 2.5 cm vertical accuracy in real time
* 7,500+ base stations, about 50 km typical baseline
* 35+ countries covered
* 99.98% uptime over the last 12 months
* Corrections delivered as RTCM 3.x, in ETRS89 in Europe and NAD83(2011) in the United States

### Multi-network reliability

RTK Premium is not tied to one network. In every Eligible Area, redundant correction sources serve your location, with smart failover when a network drops. The service level commits to 99.9% monthly availability in those areas, with a refund of the monthly fee when a month falls short. The [Service level agreement](/service-level-agreement.md) sets out the full terms, and [How to compare correction services](/learn/how-to-compare-correction-services.md) lists what to ask any provider.

### More than RTK

We cover the full range of correction methods, so you can match the method to the job rather than force one method onto every job.

* RTK and network RTK corrections for centimetre accuracy in real time
* PPP-RTK for fast convergence without a dense base network nearby
* PPP over IP and PPP over L-band for areas with limited connectivity
* Rinexlab for post-processing static and kinematic observations
* IoT SIMs that give a receiver or controller its own data connection
* The XYZ Platform for managing subscriptions and fleets
* An enterprise API and SDKs for building corrections into your own product

### Who uses our corrections

Our corrections serve surveyors and construction crews staking out and checking points, GIS teams collecting field data, drone and UAV operators, agriculture and machine-control systems, and robotics and autonomy platforms that need to hold a centimetre fix while moving.

### Where to go next

* New to corrections? Start with [What is RTK](/learn/what-is-rtk.md) and [What is NTRIP](/learn/what-is-ntrip.md) in the Learn section.
* Choosing a product? See [Products](/products.md).
* Comparing services? Read [How to compare correction services](/learn/how-to-compare-correction-services.md).
* Working in the US, Canada or the UK? See [RTK corrections in the United States](/learn/rtk-corrections-in-the-united-states.md) and [RTK corrections in the United Kingdom](/learn/rtk-corrections-in-the-united-kingdom.md).
* Ready to connect? Follow [Connect a receiver](/set-up-and-connect/connect-a-receiver.md) in Set up and connect.
* Something not working? The [troubleshooting guides](/troubleshooting/rtk-corrections-troubleshooting.md) cover inconsistent accuracy, dropped fixes, and connection errors.

New here? Start with [Getting started](/set-up-and-connect/getting-started.md).

Last updated: 7 November 2026