近年来, 激光主动成像技术得到快速发展, 为获取高分辨率的图像信息提供了一种全新的探测手段。本文阐述了距离选通成像系统的基本原理, 结合国外研究成果, 对4种成像探测系统做了介绍：超分辨率距离映射成像系统、短波红外单基/双基成像系统和红外与激光双模组合成像系统。重点对各系统的构成、关键器件及技术优势进行了研究, 并对实验结果进行了分析。分析了距离选通成像技术的发展趋势, 对发展新型成像探测系统具有参考价值。

Laser active imaging technology is developing rapidly in recent years which provides a new means for obtaining high resolution images. In this paper the principle of laser range-gated (LRG) imaging system is briefly illustrated. Four foreign LRG imaging systems are introduced including super-resolution depth mapping system mono-station and bi-station SWIR LGR system and combined system based on dual-mode infrared/laser detector. Sections of system structure core imaging device and technique advantages are discussed separately and the results of relevant experiments are analyzed in detail. Analysis is given to future development trends of LRG technology which can be taken as a reference for the development of new LRG imaging systems.