User manual
Table Of Contents
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33
Phantom 4 RTK User Manual
RTK Functions
The aircraft has a built-in DJI Onboard D-RTK, which provides more accurate data for centimeter-level
positioning to improve operation precision when using with the DJI D-RTK 2 High-Precision GNSS Mobile
Station or Network RTK service. The onboard D-RTK, providing precision position and speed information
combined with optimized algorithms, is more accurate than a standard compass sensor and functions
even with magnetic interference from metal structures, ensuring stable ight. If the RTK signal is weak and
dierential data cannot be transmitted during a Photogrammetry or Waypoint Flight operation, users can
read the raw satellite observations* recorded in the microSD card in the aircraft after the ight, and then use
PPK technology to achieve centimeter-level positioning.
Enable/Disable RTK
Ensure that the “RTK Function” is enabled and RTK service type is correctly set (D-RTK 2 Mobile Station or
Network RTK service) before each use. Go to Camera View in the DJI GS RTK app >
> RTK to view and
set.
Make sure to disable RTK function if not in use. Otherwise, the aircraft will not be able to take o when there
is no dierential data.
Using with the DJI D-RTK 2 Mobile Station
1. Refer to the D-RTK 2 Mobile Station User Guide to complete linking between the aircraft and the mobile
station and setup of the mobile station.
2. Power on the mobile station and wait for the system to start searching for satellites. The RTK status icon
on top of the Camera View in the DJI GS RTK app will show
to indicate that the aircraft has obtained
and used the dierential data from the mobile station.
After enabling the RTK function and connecting to a data source, be sure to wait for the aircraft’s
RTK module to nish initializing and the RTK / GNSS signal strength icon in the app shows FIX so
that the aircraft can take o.
Recording Input D-RTK 2 Coordinates
The DJI GS RTK app can record multiple coordinates of the D-RTK 2 Mobile Station input by users, making
it easy to manage the input history for use in future missions.
1. After connecting to the D-RTK 2 Mobile Station, go to Advanced Settings in RTK Settings in the app.
2. Input a measured latitude, longitude and altitude of the D-RTK 2 Mobile Station in the corresponding
text box and add notes for the coordinates. Note that the coordinates input should not be more than
50 m away from the actual location of the D-RTK 2 Mobile Station.
3. Tap Settings to write the coordinates into the D-RTK 2 Mobile Station. The coordinates will be recorded
in the History list.
4. Tap Reset to clear the information in the text boxes.
5. Choose the item in the History list to ll the information in the text boxes. If the information in the text
boxes has been changed, a new item will be generated after tapping the Settings button.
6. Tap Editing Mode in the History list to delete items in this mode.
* The raw satellite observations are stored in the same directory as the aerial photos. They will only be recorded
during Photogrammetry or Waypoint Flight operations. For Waypoint Flight operations, route recording
should be disabled in Route Settings. Otherwise, the raw satellite observations cannot be recorded. In other
situations, such as ying the aircraft and shooting manually, the data will not be recorded.