> 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 ## Welcome to Premium Positioning 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 1 to 2 cm, across more than 35 countries globally. Our product portfolio, RTK Premium from Premium Positioning, runs on a network of over 7,500 base stations and serves more than 35,000 connected devices. 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 * 1 to 2 cm accuracy in real time * 7,500+ base stations, 70 km average baseline * 35+ countries covered * 35,000+ connected devices * 99.98% uptime since 2018 * Corrections delivered as RTCM 3.x in ETRS89 ### More than RTK Most correction providers answer one question: cheap network RTK. We cover the full range, so you can match the correction method to the job rather than force one method onto every job. * RTK and NRTK 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 * The XYZ platform for managing subscriptions and fleets * An enterprise API and SDKs for building corrections into your own product If you are not sure which one you need, the two-minute service guide walks you through it. ### Who uses our corrections 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#what-is-ntrip-and-an-ntrip-caster) in the Learn section. * Ready to connect? Follow [Connect a receiver](https://claude.ai/chat/b419af49-7d48-49a1-832b-42d52fe66419#) in Set up and connect. * Something not working? The [troubleshooting guides](https://claude.ai/chat/b419af49-7d48-49a1-832b-42d52fe66419#) cover inconsistent accuracy, dropped fixes, and connection errors. * Building on the API? Head to the [Developers](https://claude.ai/chat/b419af49-7d48-49a1-832b-42d52fe66419#) section for authentication and your first call. New here? The fastest route in is the [two-minute service guide](https://claude.ai/chat/b419af49-7d48-49a1-832b-42d52fe66419#), which points you to the right correction method and the matching quick start. *** --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.premium-positioning.com/welcome.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.