Low-light-level Active Gated Imaging Technology

This paper focuses on active imaging night vision systems, proposes using laser technology, range-gated and target recognition technology and image processing technology of low-light-level Active-gated imaging system. Systematically addresses the low-light-level Active gated imaging system’s basic structure, working principle, the design process, as well as performance.Shimmer active selected pass imaging system used active launches laser, lighting interest of target objects, uses synchronization control technology achieved distance selected pass, inhibition Hou to scattering phenomenon, while used like enhanced Manager and image processing technology significantly improve has system of can detection distance, expanded has image of letter noise than, like mass clear improved, achieved has in low according to degrees environment Xia on far distance target of detection.This papers to distance selected pass laser active imaging technology for theory based, design has target selected pass imaging system uses Altera company Hurricane series high performance FPGA design selected pass control circuit, achieved has selected pass distance can adjustable, and output selected pass pulse width can adjustable, features, and precision can up ns level, completed has selected pass Imaging image, achieved has based on serial communications of selected pass Imaging distance of set.Technical approaches to the simulation and experimental results indicate that the system is feasible, to achieve the expected results, for the development of practical applications of low-light-level solid technical basis for the active gated imaging system.