GeoAstra RTK-Expert Toolkit is a no-install, web-based RTK and PPK utility suite designed to simplify high-accuracy GNSS workflows. It runs entirely in the browser and requires no local software setup.
The toolkit includes three core utilities:
PPK Studio
PPK Studio converts raw GNSS rover and base data into centimeter-level accurate positions using post-processed kinematic (PPK) processing. Users simply upload their data, and results are generated automatically with no complex configuration. Position quality is displayed through clear visual plots, and data points can be verified directly on satellite maps. Results can be exported in common formats such as SHP, GPX, KML/KMZ, and CSV for immediate use in surveying, GIS, and drone workflows.

PPK Downloader (not available in the Free edition)
Downloads RTCM or base station data from any CORS or NTRIP mountpoint for use in PPK processing.
RTK Base Analyzer (not available in the Free edition)
Analyzes NTRIP mountpoints by inspecting their RTCM data stream to provide insight into data content and quality.
