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PPK 3cm Accuracy

The new QuestUAV Post-Processing Kinematic (PPK) drone combines high-resolution aerial photography with high-accuracy topographic data.

A dual band GPS/GLONASS receiver on board the PPK drone allows cm-level position referencing of orthomosaics and 3D models without the need on physical Ground Control Points (GCPs).

This saves hours of mission planning and setup time, physically measuring location points and walking the survey site for placement.

Q-200 PPK White Paper

The QuestUAV-200 PPK aircraft is equipped with a dual-frequency L1/L2 receiver tracking both GPS and GLONASS signals. 132 hardware channels allow to simultaneously track all visible GPS/GLONASS satellites. In parallel the receiver records the shutter events of the camera and logs the information during flight on an on-board SD card.

After flight camera positions are corrected by combining GNSS recordings of the aircraft with the corresponding information of the reference base station on the ground, replacing the positions embedded in the images (EXIF data) with more precise cm-level RTK values.

Post Processing Software

Photogrammetric processing is completed using the Agisoft PhotoScan software, including the generation of orthomosaic and digital elevation model and the export as GeoTiff files.

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