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. 2019 Sep 2;19(17):3796. doi: 10.3390/s19173796

Table 4.

Key differences between spectral image platforms.

Applicability Aspect Airborne UAV Satellite
Observation Area Regional Local Worldwide
Ground Coverage 1 km (Medium) 100 m (Small) 10 km (Large)
Field of View Wider Wide Narrow
GSD (Spatial Resolution) 5–25 cm 10–5 cm 0.30–300 m
Deployability Complex Easy Difficult
Spatial Accuracy 1–25 cm 5–10 cm 1–3 m
Repeat Time Hour(s) Minute(s) Day(s)
Operational Risk High Low Moderate