Research of Laser Echo Simulation and Critical Properties

摘要

Laser distance indicator usually consists of pulsed laser, laser power, transmit and receive optical system, laser detector, the receiver circuit, the counter and so on. Laser distance indicator regards the main wave which Laser transmitted as time counter start signal, regards the echo which obtained through the target reflected as counter terminal signal , the counter counts the clock cycle, the number of cycle which timing acquired multiplies the corresponding path length of unit cycle, the relative distance between the indicator and target can be obtained.