【作者】 张健； 李明卓； 王春晖； 王骐；

【Author】 ZHANG Jian, LI Ming-zhuo, WANG Chun-hui, WANG Qi (National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China)

【机构】 哈尔滨工业大学光电子技术研究所可调谐激光技术国家级重点实验室；

【摘要】 重点讨论了数字微镜器件(Digital Micromirror Devices,DMD)的空间调制特性以及灰度等级控制特性,在此基础上提出了基于DMD器件的激光成像雷达目标模拟器反射图像的灰度级的控制方法。数字微镜器件是一种新型的微电子、微机械、微光学集成器件,可作为空间光调制器。在激光成像雷达半实物仿真系统中,由计算机图像生成器产生图像信号,图像信号转换成脉冲宽度调制控制信号,驱动DMD目标模拟器,产生不同灰度级的反射图像,验证了DMD目标模拟器在激光成像雷达半实物仿真中的可行性。更多还原

【Abstract】 The characteristics of spatial light modulator and controlling gray level of DMD have been particularly introduced in this paper. Then the controlling method of laser imaging radar DMD object simulation reflected image’s gray level is put forward. DMD is a new type of component that integrates with microelectronics, micro-machinery and micro-optics, and it can be used in the spatial light modulator. In hardware in the loop simulation of the laser imaging radar system, the image signal generated by the computer imaging generator transforms the pulse width modulate controlling signal, drives DMD object simulation, and produces different gray levels of reflected image. Therefore, DMD object simulation in hardware in the loop simulation of the laser imaging radar has been proved practicable.更多还原