Research on high-precision signal delay generator for range-gated imaging lidar

In this paper, a low-cost signal delay generator which can be used for lidar range gating is developed and implemented by MC100EP195 delay chip and STM32 microcomputer. LabVIEW is used to write the upper computer control software, and 4 delay chips cascade is adopted to realize 0-40ns delay range. By controlling the encoder and the upper computer, the delay accuracy of 10ps can be obtained. The inherent delay of the generator is 10ns, which can meet the requirements of lidar range gated detection and other high precision applications.