Table 2 Sensor and ALS point cloud properties
Property | 2014 ALS | 2021 ALS |
|---|---|---|
Sensor | Riegl Litemapper 6800i | Riegl LMS-Q780 |
Platform | Plane | Plane |
Acquisition date | March–April 2013 February–March 2014 | February–March 2021 |
Number of returns recorded per pulse | Up to 4 | Up to 7 |
Pulse frequency (kHz) | 150 | 400 |
Scan angle (°) | ± 60 | ± 28 |
Mean point density (pts/m2) | 3 | 13 |