Table 1 Comparison of efficiency for different numbers of UAVs.

From: Multi-UAV forest area inspection path planning based on concave polygon region decomposition

Number of UAVs

Coverage Time (minutes)

Total Coverage Distance (km)

Number of Turns

Area Variance (km2)

1 UAV

148

345.65

54

——

3 UAVs

95

295.77

49

0.08

5 UAVs

67

255.13

42

0.03

7 UAVs

61

244.86

44

0.12

9 UAVs

49

231.24

51

0.15