Design of the calibrating system for laser ranging accuracy based on DS1023

A design scheme of ranging accuracy calibrating system for laser range finder based on DS1023 programmable delay chip was proposed in this paper. The system gathered impulse signals extraction, precision time delay and echo signal simulation in integral whole. Distance simulation and energy simulation became a close loop. The precision delay module took Micro-controller AT89C52 as control central and Multi-chips cascading realized the simulating of a finite target distance. Considering time delay error originating in chips-docking, optimal planning design method was adopted. The range limitation was overcome better while keeping high accuracy. The calibrating experiment indicated that the system can realize 50-3000 m distance calibrating range, 1 m calibrating accuracy, 0.5 m measurement repeatability and satisfy the ranging request of design.