DJI PPK Utility

Introduction

The DJI PPK Utility , located in the Utilities group on the Sensor tab of the LP360 ribbon, is a powerful tool designed to assist users with post-processing kinematic (PPK) workflows for DJI L1 or L2 payloads. This utility helps streamline the otherwise arduous process and multiple steps users need to follow to prepare their raw mission folders for Post-Processing Kinematic (PPK) in DJI Terra by performing operations such as:

• Automatically associating base station file(s) with each raw flight folder.
• Converting Trimble base station T02 files.
• Concatenating multiple observations, when necessary.
• Providing for easy assignment of the survey nail/reference mark, coordinate reference system, etc.

Note: Most users process their L1/L2 data using RTK, where they maintained connection with the D-RTK2 base station or VRS to the DJI system for the duration of each flight. This utility is only necessary if there was an issue with RTK or a user desire to process with PPK.

Do not use this utility when using the DJI Raw L1/L2 workflow for processing using LP360's DJI Cloud.

Using the DJI PPK Utility

1. Insert USB Drive: Connect the USB drive containing your raw flight data to your computer.
2. Open Utility: Launch the DJI PPK Utility.
3. Add Flight Folder: In the upper portion of the dialog, add your Raw Flight Folders by selecting the green “+” and browsing for the folders as found on the USB after acquisition. This is the raw flight folder from the sensor, which includes observation files and timestamp files. 
4. Base Observation Files: In the lower portion of the dialogue, select your Base Station Observation files by selecting the green “+” and browsing for the RINEX or Trimble T02 files.
   • Base observation files overlapping in time with each flight in the upper section will be listed in their “Base Observation Files” column. All observations must be from the same location. Edit to remove, if necessary.
5. Configure Flights: For each flight listed, select a reference mark. The dropdown menu will show available reference marks from your Survey Nail Manager, or to create a new one, or enter a manual position.
6. Update Raw Flight Folders: Then, select “Update Raw Flight Folder(s)” to allow the DJI PPK Utility to make the necessary modifications to prepare your raw flight datasets with the base station observation files for PPK processing by DJI Terra. The DJI PPK Utility in LP360 makes for quick data preparation.

7. Process Trajectory and Geocoding: Proceed to perform the applicable pre-processing in DJI Terra akin to processing an RTK flight, before returning to LP360 to Import Cycles for the processed L1/L2 data.