"If you have RTK/PPK then GCP can be used as checkpoints only to control accuracy." YOU CAN DO THIS JUST TO DO SOME TEST OR TO CHECK YOUR RTK/PPK, IN A WORK IF YOU HAVE GCP (THAT ALWAYS IS MORE ACCURATED) YOU HAVE TO USE AS CONTROL POINT. After that run aerotriangulation using GCP(with specifying correct coordinate system and geoid) with option to only adjust positions without recalculation. WHICH IS THE OPTION TO ONLY ADJUST WITHOUT RECALCULATION?WHERE IS? This will allow to double check accuracy. ANYWAY RTK/PPK ACCURACY IS MORE OR LESS 10 CM (ARE YOU AGRY?), GCP 1-2 CM....IT IS REALLY DIFFERENT PRECISION (X10). IF YOU HAVE GCP YOUR PRECISION COME FROM CGP. I CONTINUE TO THINK THAT IF YOU WANT CENTIMETRIC PRECISION THE ONLY WAY IS TO USE GCP, AND IF YOU USE IT THEREFORE YOU DON'T NEED (AND DON'T IMPROVE PRECISION) HAVE PPK/RTK. AS I TOLD BEFORE PPK/RTK IS ESSENTIAL WHERE YOU CAN'T PUT GCP, OTHERWISE WITH GCP IS USELESS, IF YOU WANT TO REDUCE GCP YOU HAVE TO ASPECT YOU WILL REDUCE THE ACCURACY ANYWAY, WHETHER YOU HAVE RTK/PPK BOTH DON'T HAVE.
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