REDtoolbox v3.4.2 is the latest update in the REDtoolbox series from REDcatch GmbH, a specialized Windows-based GNSS Post-Processing Kinematic (PPK) and geotagging software tailored for aerial mapping, drone photogrammetry, and geospatial data correction. It provides centimeter-level accurate image coordinates when real-time RTK is unavailable or unreliable, processing base-rover setups from various drones and GNSS hardware. The software automates workflows for RGB and multispectral imagery, supports multi-flight projects, and outputs directly compatible with photogrammetry tools like DJI Terra, Pix4D, Agisoft Metashape, and more. Version 3.4.2 builds on v3.4.1 (November 2025), which added full support for DJI Matrice 4 RTK Enterprise (RGB and Multispectral) and D-RTK3 base stations, with likely minor stability, compatibility, and performance refinements in this patch.

Key Features of REDtoolbox (v3.4 Series, including 3.4.2)

  • Multi-Constellation & Multi-Channel PPK Processing: Supports GPS, GLONASS, BeiDou, Galileo; processes L1, L2, L5 frequencies for robust base-rover corrections in challenging environments.
  • Broad Device & Drone Compatibility: Works with DJI (including Matrice 4 RTK Enterprise, Mavic 3 series), Autel, Yuneec, Emlid, u-blox, SwiftNav, Septentrio, REDcatch hardware, and many more; handles RGB and multispectral datasets.
  • Automated Multi-Flight & Large-Scale Projects: Folder crawler for automatic file sorting; auto-search function; enhanced merge capabilities for combining multiple flights/sessions in one run; processes thousands of images with centimeter accuracy.
  • Geotagging & EXIF Editing: Writes precise PPK-corrected coordinates to image EXIF; supports RTK coordinate shifting to match GCPs; native outputs for photogrammetry software.
  • Geoid & Height Handling: Optimized geoid support for accurate ellipsoidal-to-orthometric height conversions; improved base station management for reliable corrections.
  • Additional Tools & Usability: CLI interface for automation/integration; shift RTK coordinates in JPEG EXIF to align with GCPs; high automation for hands-off workflows (often 2-click processing).
  • Output & Integration: Centimeter-accurate geotags for direct import into mapping/photogrammetry tools; supports RINEX merge and multi-constellation data for enhanced reliability.