How accurate is LiDAR?
LiDAR is one of the most accurate surveying technologies.
To help achieve accuracy on airborne laser sensors, they are paired with IMU (inertial motion unit) and a GNSS receiver. This helps to achieve a high relative accuracy of 1-3cm. With the addition of ground control points (GCPs), higher absolute accuracies can be achieved.
If additional GNSS positioning accuracy is needed, PPK and RTK can be used.
Related Questions
What are Ground Control Points? How to obtain Ground Control Points?
Ground Control Points (GCPs) are marked points on the ground with known coordinates and are clearly visible in an image.
The thermal pixel pitch of M3TA is reduced compared with M3T. How does this impact data quality?
The DJI M3TA has better spatial resolution (smaller iFOV), which allows the thermal camera to obtain better details at the same distance.
Does the Emlid Reach RS4 Pro support tilt compensation?
Yes.