The Klau PPK 7700C is a high precision GPS module allowing to refine the precision of the spatial localization of aerial images and thus to optimize the process of photogrammetry. It is a solution that includes an external module and software developed by surveyors and geomaticians who are experts in photogrammetry for industry professionals. This drone photogrammetry method will allow you to: reduce the number of ground control points to achieve absolute data accuracy of around 2 to 3 cm in XYZ; increase the security of the readings as you do not have to walk the entire site to install checkpoints; reduce the lateral overlap to 40%, which allows to cover between 1.5 to 2 x more ground in a single flight; connect directly to the geodetic networks of permanent stations in PPP mode; increase the processing speed, because you only have to download your raw GNSS data and using the software the positioning will be corrected in just a few clicks.