RTK vs PPK
RTK ( Real Time Kinematics) and PPK (Post Processing Kinematics) are two different methods to provide accuracy corrections to drone imagery. RTK corrections happen in real time. PPK corrections happen in post processing after the flight. Each method has pros and cons depending on your site and workflow.
RTK
Corrections applied during flight via a live link to a base station or CORS network.
Enables instant centimeter-level accuracy for geotagging images.
Ideal for time-sensitive projects like construction monitoring or emergency inspections.
Requires a stable connection throughout the flight, signal loss can reduce accuracy.
PPK
Corrections applied after the flight using raw GNSS data from both drone and base station.
More resilient to signal dropouts, making it suitable for remote or obstructed environments.
Offers high accuracy, often better than RTK in challenging conditions.
Requires additional post-processing time and software.
Comparison
Correction Timing
Real-time during flight
After flight (post-processing)
Connectivity Needed
Constant live link
None during flight
Workflow Speed
Fast, immediate results
Slower, requires post processing
Accuracy
High, but connection-dependent
High, more consistent
Best Use Cases
Construction, inspections
Remote Mapping, large areas
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