Investigation of topographic effect in ground control point selection in UAV photogrammetry: Gaziantep/ Nizip

Kapıcıoğlu H. Ş. , Hastaoğlu K. Ö. , Poyraz F. , Gül Y.

International Conference On Innovative Engineering Applications - CIEA 2018, Sivas, Türkiye, 20 - 22 Eylül 2018, ss.1174-1178

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Sivas
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1174-1178


The Ground Control Point (GCP) design in Unmanned Aerial Vehicle (UAV) Photogrammetry directly affects the accuracy of the products. Especially in areas where topographic change is high, this effect is observed more clearly. In this study, the relation between location of GCP and accuracy of positioning was investigated in an area of 270 hectares in Gaziantep/Nizip. For this purpose, 4 different GCP network have been designed. In order to test the position accuracy in the study area, Global Navigation Satellite System (GNSS) measurements were carried out. Afterwards, the positioning information obtained from GNSS and UAV evaluations were compared and the effect of GCP design on position accuracy for Nizip region was investigated.