- #1
DariusP
- 50
- 3
I've read that there are laser rangefinders who measure the distance not only by ToF (time-of-flight) method but also by phase-shift.
I think I can understand that. Depending how much the phase of the input pulse shifts from the output pulse we can translate it into how much distance the pulse has traveled.
But a question immediately arose: what happens if the phase shift is over 2pi?
I think I can understand that. Depending how much the phase of the input pulse shifts from the output pulse we can translate it into how much distance the pulse has traveled.
But a question immediately arose: what happens if the phase shift is over 2pi?