It looks like you mistyped the URL in your address bar or have followed an old bookmark.
Our new Swarm M138 Satellite Transceiver Kit is now available along with a Limited Edition MultiStar Ornament!
Correction data is used in surveying and navigation to enhance the accuracy of GNSS. Learn here about what types of errors it fixes, how you can use correction data in your projects, and the difference between DGNSS, RTK, SBAS, and PPP