Table 1 Specification of the UAV used to perform the Digital Photogrammetric survey
Type | DJI Phantom 4 RTK |
|---|---|
Weight (payload included) | 1391Â g |
Camera sensor type | CMOS |
Camera sensor size | 1 inch |
Camera sensor resolution | 20 megapixels |
Camera focal length | 8.8Â mm (35Â mm format equivalent: 24Â mm) |
Camera shutter | Mechanical |
Gimbal type | Mechanical 3-axis |
Inertial Measurements Unit (IMU) accuracy |  < 2° |
GNSS type | Real time kinematic (RTK) |
GNSS accuracy |  < 1.5 cm |