TY - JOUR T1 - Comparative Analysis of RTK and Net-RTK Accuracy in UAV-Based Photogrammetry AU - Alkan, Öykü AU - Alzubade, Muntaha Kassim AU - Alkan, Mehmet Nurullah PY - 2024 DA - December Y2 - 2024 DO - 10.55549/epstem.1598448 JF - The Eurasia Proceedings of Science Technology Engineering and Mathematics JO - EPSTEM PB - ISRES Publishing WT - DergiPark SN - 2602-3199 SP - 244 EP - 250 VL - 32 LA - en AB - This study evaluates the positional accuracy of UAV photogrammetry using RTK and Networkbased RTK (Net-RTK) methods. A two-story building was selected as the test site, and photogrammetric flights were conducted with consistent flight parameters for both RTK and Net-RTK systems. The 3D coordinates of characteristic points on the structure were digitized for both methods, with RTK-based data serving as the reference for comparison. Root Mean Square Error (RMSE) values were calculated to assess the accuracy, indicating minor random discrepancies in horizontal coordinates (Y and X) but a more notable and possible systematic error in the vertical component (H). Statistical analysis confirmed that while Y and X axis differences were random, height differences displayed a systematic trend, particularly evident in Net-RTK measurements. The results suggest that while RTK offers higher vertical accuracy suitable for precision applications, Net-RTK remains a viable alternative for general purposes, particularly in areas with reliable internet connectivity. KW - GNSS KW - RTK KW - Net-RTK KW - UAV photogrammetry CR - Alkan, O., Alzubade, M.K. & Alkan, M.N. (2024). Comparative analysis of RTK and Net-RTK accuracy in UAV-based photogrammetry. The Eurasia Proceedings of Science, Technology, Engineering & Mathematics (EPSTEM), 32, 244-250. UR - https://doi.org/10.55549/epstem.1598448 L1 - https://dergipark.org.tr/en/download/article-file/4426485 ER -