Pictures without geotag (radiometric calibration)

I performed a drone flight with the Sequoia sensor but for some reason several pictures were not geotagged (I took pictures to the calibration target before the mission). I extracted the GPS location from the autopilot and merge them to fix the geolocation. However, I can not perform the Camera and Sun Irradiance calibration (which I assume they could not be written in the pictures due to the lost of the GPS signal of the irradiacne sensor?). Is there a way to fix this? I am using Pix4Dmapper.


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