Research on Key Technology for Phase-Shift Laser Range Finder

Laser range finder is one of the effective and automatic methods for distance measurement, making distance measurement much easier and safer in the places where people can´t reach. Laser range finder helps to measure the distance accurately by finding the difference of phase which brings by modulated wave through the distance. Through the analysis of existing laser ranging technologies as well as the comparison of the different technological performance, phase-shift laser ranging method is proposed. This thesis aims to study some key technologies on phase-shift laser ranging for short-distance laser range finding sensor.