激光距离选通成像系统与热成像系统组合应用模式已成为国内外关注的发展趋势之一。简要阐述了激光距离选通成像系统的工作原理及技术特点；结合国外最新出现的主/被动成像组合模式，介绍了4种典型实验系统：单纯的激光距离选通成像系统、短波红外距离选通成像＋热成像组合系统、热成像＋激光雷达共光路组合系统、多波段双模成像系统，分析了各组合系统的结构组成、核心器件和技术优势；介绍了相关实验研究结果，着重介绍了两种新的成像模式——非视域成像模式和双基成像模式。分析了激光距离选通成像技术的发展趋势，对发展新型激光距离选通成像技术和装备具有参考价值。

Application mode of Laser Range-gated Imager (RGI) combined with Thermal Imager has become one of the dominant trends in the field of night vision imaging, in which domestic and foreign countries are interested.The principles and key techniques of RGI system are illustrated briefly; four typical active/passive combined systems are reviewed from aspects of system structure, core imaging device, technique advantages, and results of relevant experiments; the four typical active/passive combined system are simple RGI, SWIR RGI combined with Thermal Imager system, combined system based on dual-mode infrared/LADAR sensor and combined system based on multifunctional detector and dual-wavelength optic.Especial emphasis is put on two new imaging mode: non-line-of-sight imaging and bi-static measurement.Finally, latest developments of RGI technique are analyzed, which are valuable for the development of new RGI equipment.