Table 3 Performance comparison of each sensing technique
Sensors | Carriers | Performance | |||
|---|---|---|---|---|---|
Resolution | Equipment cost per unit | Accuracy compared with the ground truth | Data processing cost | ||
LIDAR-Lite v2 sensor | Ground vehicle | Low, only reflect 1-dimensional measurements | < $100 | Low, due to the low sampling frequency | Low |
Ultrasonic sensor | $300–$800 | High | |||
Kinect camera | ~ 0.2 MP | < $300 | High, within the optimal measuring range | ||
DSLR cameras | ~ 18 MP | > $800 | Highest | High, due to photogrammetry processing | |
Digital cameras | UAV | ~ 12 MP | < $600 | Lowest | |