Autonomous Identification of Bridge Concrete Cracks Using Unmanned Aircraft Images and Improved Lightweight Deep Convolutional Networks

Table 1

Main flight performance parameters of UAS.

Main indicator	Parameter value
Weight	1375 g
Wheelbase	350 mm
Flight time	30 min
Maximum ascent speed	6 m/s
Maximum descent speed	4 m/s
Maximum horizontal flight speed	72 km/h
Maximum flight altitude	6000 m
Maximum wind resistance rating	10 m/s
Maximum transmission distance	7.5 km
Working temperature	0–40 degrees