LV_Forestry
First Officer
Flight distance : 4726654 ft
Latvia
Offline
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Step 1/ Change .RTK file extension (located in the L2 folder) by .rtcm3 It is the observation file of the rover, here the drone itself.
Step 2/ Convert it to RINEX with Emlid, pay attention to choose the right date.
Step 3/ Open the result folder (must be located where the .rtcm3 file is). You must find one OBS (.24O) and one NAV (.24P) P is Mixed Nav, no worries if its not N.
Step 4/ In Emlid, Drone Data processing, as follow :
Drone : The .24O from previous conversion
Base : Your favorite Base station OBS file
Navigation : The .24P from previous conversion, or any of you favourite navigation file provider (IGS)
MRK : The MRK file from the L2 folder
Perfect ! Oblique pictures are in Single mode, i don't know why. Looks like it wasnt covered by the OBS file.
Step 5/ Add the L2 folder and tag pictures.
Step 6/ Locate the .pos file which should be near the tagged pictures folder. Copy data but not the header, then paste it in Excel.
Step 7/ Load pictures in Metashape. Export pictures tag in a csv file (This step is made to save pictures names and camera calibration data if they exist, in this case no) Paste this info in the Excel sheet. save as CSV format.
Step 8/ Load it in Metashape and choose Columns as they are below :
It will update coordinates if you use the original pictures, and add accuracy.
It's a bit of a tedious process, but it's effective!
I find a difference of 5m vertical by staying in WGS and without using GCP, without calibrating the camera. Not too bad !
Could you share with me the coordinates of the GCPs so that I can check on the orthophoto?
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