The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLVIII-1/W1-2023
https://doi.org/10.5194/isprs-archives-XLVIII-1-W1-2023-345-2023
https://doi.org/10.5194/isprs-archives-XLVIII-1-W1-2023-345-2023
25 May 2023
 | 25 May 2023

PPK PROCESSING TO BOOST UAS ACCURACY IN CADASTRAL MAPPING

V. E. Oniga, L. Morelli, M. Macovei, C. Chirila, A. I. Breaban, F. Remondino, and P. Sestraș

Keywords: UAS photogrammetry, GNSS, PPK, DJI Phantom 4 Pro v2, cadastral mapping, accuracy, TeoKIT

Abstract. Unmanned Aerial Systems (UAS) are increasingly used in different applications, including 3D urban modelling, cadastral mapping, urban planning, GIS information system and other fields because of their advantages. As a consequence, UAS equipment is constantly developed to provide more accurate results in a more reliable mode. This paper aims to evaluate the performances of a low-cost UAS system, namely DJI Phantom 4 Pro v2 equipped with a TeoKIT GNSS PPK (post-processing kinematic) module for cadastral mapping purposes. Two fights (oblique and nadir) over a residential area at 60 m height were performed and some 100 ground points were used to derive RMSE accuracies. Comparison between GNSS-aided with PPK processing and indirect georeferencing processes are performed. Given a mobile laser scanner (MLS) point cloud as ground truth, comparison with UAS point clouds and manually digitized features are also performed and reported.