昼夜光电成像技术经过了几十年的发展,现在已经进入到实用阶段,在军事、航天、天文等领域中占有十分重要的地位。为解决极弱光环境下难以成像的问题,在分析了微光像增强器和近红外固体成像技术之后,提出了一种新型的成像系统,利用空间光调制器和单像素探测器对目标信息进行调制和探测,之后利用关联算法即可恢复出探测目标的图像,基于此成像系统实现了17 km外的成像实验。该成像系统有望实现高灵敏度成像,对突破无月夜晚等极弱光环境下的光电成像具有重大意义。
After tens of years development, photo-electronic imaging during day and night has entered the practical stage, and playes an important role in military, aerospace, astronomy, etc. In order to realize the photo-electronic imaging in low-light-level, a new-type of imaging system was proposed by analyzing the Image-Intensifier Tubes and near-thermal imaging. In this new-type of imaging system, spatial light modulator and single element detectors could be used to modulate and detect the information of the objective, after that correlation algorithm was used to restore the objective image. In experiment, a setup based on single element detectors was built to take an image of the television tower for a long distance about 17 km range. High sensitive imaging could be realized by this new-type of imaging system. The results demonstrate that this new imaging system is a promising approach to achieve photo-electronic imaging in low-light-level, such as moonless night.