This document explains how to prepare and process photogrammetric acquisition with the DJI Mavic 3E RTK.
In the right panel set the flight parameters to:
1- Choose the name of the flight plan.
2- Select the camera ("M3E Series">"M3E">"WIDE").
3- Make sure "Ortho Collection" is selected.
4- Leave "GSD" parameter and go directly to "Altitude Mode" and set "AGL" in the drop down menu.
5- Activate "Real-Time Follow".
6- Set the height of the flight (100m).
7- ⚠️ **Activate "Elevation Optimization".**⚠️
8- Set the "Safe Takeoff Altitude" to 100m.
9- Decrease the speed of the drone by about 5%.
10- The best course angle is automatically calculated. But you can ajust it if you want.
11- Be sure "Return To Home" is selected in "Upon Completion" setting
12- In "Advanced Settings":
Once all the parameters are set, click on save button and name the flight plan.
For control of the photogrammetric survey, you need GCP (Ground Control Point).
Place a minimum of 4 black&white targets uniformly over the area to be surveyed and use a GNSS pole to survey the center of it. Never put the same name for 2 GCPs.
For avoid boring pinning the target in images(in processing step) , we have a algorithm who detect automaticaly these GCP but it's need to be black&white. If you flight at 60m/80m above ground you can pick these one : Here
You have 2 methods to georeferenced your D-RTK2 station.
With a GNSS pole you can set a point and place your D-RTK2 on it. And make the same procedure as above.
Set up the drone on its mat on a flat and clear area. Check that the drone camera is not touching the ground. Always turn on the remote control first and leave the drone off.
Note: to turn on the remote control, press the power button once short and once long. Same for the drone.
1- On controller click on 'Flight route" card
2- Select youre flight plan.
3- Turn on the drone and wait for the synchronization to be done.
4- Click on the 3 dots on the upper right corner.
5- On the first tab of parameters:
6- On the RTK parameters tab :
7- Hit the blue button (play) on the to left of the screen.
8- Verify the parameters. And in bottom hit "next".
Keep your hand on the remote control and ensure that the drone is visible. Before the drone lands, set the gimbal angle to 0 to avoid getting too much dust on the camera lens when landing.