6.2. Flight log

Shows what a DJI enterprise drone recorded on a flight, photo by photo: the drone’s own RTK position, its accuracy and RTK status from the .MRK file, and – when the flight was processed with the DJI PPK tool – the PPK result next to it.

Use it to check a flight before processing it (did every photo get an RTK fix? are photos missing?) and to compare the PPK result with the drone’s real-time RTK afterwards.

6.2.1. Inputs

Flight folder – the folder with the photos and the .MRK file. PPK result is optional: <flight folder>\PPK\cameras_EGSA87_full.csv (what the DJI PPK tool writes) is used automatically when it exists; choose another file to compare against it. Press Load.

6.2.2. Tabs

Summary

Number of photos and MRK events (photos without an event and events without a photo are listed – a missed trigger or a deleted file), flight duration, photo interval, length of the flight line, mean speed, height range, the on-board RTK status counts and accuracy, and with a PPK result: its fix rate and accuracy, and the PPK - on-board RTK difference for photos where both are fixed.

Map

The photos in plan, coloured by the on-board RTK status or by the PPK solution quality (green fixed, yellow float, red single, grey no position). The triangle is the first photo. Drag to pan, wheel to zoom.

Charts

Height of the camera (on-board RTK and PPK), the accuracy the drone wrote for each photo, and PPK - on-board RTK in north, east and up, against the minutes since the first photo.

Table

One row per MRK event with all of the above.

6.2.3. Reading PPK - on-board RTK

The two are rarely in the same frame: the drone’s RTK comes from the network it was connected to (HEPOS: HTRS07), the PPK from the base point’s EGSA87 coordinates. A constant offset (on the reference flight -0.32 m N, -0.36 m E, +0.14 m U) is therefore normal; the scatter around it (there 3 mm, 2 mm and 9 mm) shows how well the two agree.

6.2.4. Exports

Export KML writes the flight line and the photos, coloured as on the map (on-board RTK or PPK positions, following Colour by), for Google Earth. Points are clamped to the ground. Export CSV writes the table. PDF report writes the Summary, the map (coloured as on screen), the three charts and the table as an A4 PDF, with the firm details and the surveyor’s signature block from the Company Info profile shared with the Network Adjustment report.