UAS photogrammetric blocks: accuracy, georeferencing and control

UASs are today a viable alternative for collecting remote sensing data for a wide range of applications in agriculture, cultural heritage, restoration, environmental monitoring, safety, cadastral management, map updating, etc.. All the above-mentioned applications need a metric validation and reliability of results for the acquired data to be suitable to their purposes. It is in this matter that the photogrammetrists question about the accuracy of the results. In particular, the topic of this work concerns the quality control of both accuracy and reliability of UAS photogrammetric blocks. Investigations has been performed by a series of Monte Carlo (MC) numerical simulation over synthetic blocks in order to study impact of the block control and the camera network design on the block orientation accuracy.