Analysis of GNSS-Based Referencing Techniques for Processing Unmanned Aerial Vehicle Derived Imagery and Producing 3D Data


Acar H.

3. Uluslararası Mühendislik, Tasarım ve Yenilikçi Yaklaşımlar Sempozyumu, Sinop, Türkiye, 24 - 25 Aralık 2025, ss.76, (Özet Bildiri)

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Sinop
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.76
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

Unmanned Aerial Vehicles (UAVs) are widely used as an alternative technology to traditional methods in various applications such as high spatial resolution orthophoto production, three dimensional (3D) point cloud generation, and 3D digital twin creation. UAV derived high accuracy datasets provide significant advantages, particularly for monitoring surface changes in regions where access is limited. The positional accuracy of the produced data may vary depending on the referencing techniques employed, such as Real Time Kinematic (RTK), Post Processed Kinematic (PPK), and ground control points (GCPs). Challenging conditions such as mountainous topography, lack of accessibility to reference points, and insufficient internet connectivity necessitate the use of alternative solution approaches. In this study, in addition to examining standard RTK and PPK solution techniques, the processing of RINEX data obtained from distant TUSAGA-Aktif stations via the PPK method under challenging terrain conditions was evaluated. This approach aims to enable reference point establishment in mountainous areas where triangulation points are absent and internet based positioning is not feasible. The findings indicate that the proposed technique provides significant benefits for reference point establishment in UAV based photogrammetric projects conducted in mountainous regions.