Large scale metrology

Question 1

Explain Laser Trackers

Answer 1

Laser trackers use a laser beam to track the position of a retro reflector in space

In a retro reflector, the laser beam is reflected back along the vector that is parallel to but opposite in direction from the incoming laser beam

Question 2

Explain Laser Scanners

Answer 2

Laser scanners scan their environment
A laser beam is projected using a spinning mirror inside a rotating head
Outgoing laser beam is reflected by surrounding environment
The x/y/z coordinates of a reflecting point are determined using tilt and rotation angle and time of flight of the laser beam