距离选通成像的主要参数调节仿真分析

Simulation on Adjusting Main Parameters for Range Gated Imaging System

距离选通激光主动成像技术能够很大程度上抑制大气后向散射和环境光的干扰,获得高分辨率、高对比度图像,该技术在目标探测、识别等领域有十分广泛的应用前景;因此,确定距离选通成像系统参数选取原则很有意义;结合距离选通成像原理,对探测器接收能量和噪声进行了估算,得到成像信噪比,建立了成像参数模型;进一步结合仿真实验,对成像的影响因素及主要参数进行了调节仿真分析,最终得到了系统参数选取原则。

Laser range-gated active imaging technology can largely suppress interference from back- scattering of the atmosphere and ambient light and can obtain high-resolution and high-contrast images. The technology has a broad application prospects in the field of target detection, identification and so on. Therefore, it is very important to determine the parameters of the range gated imaging system. Based on the principle of the range gated imaging, the energy and noise that the detector obtains were estimated, and then the signal to noise ratio of the image was obtained, and the parameter model of imaging was established. Furtherly, the influence factors and the main parameters of the imaging system were analyzed through the simulation experiments, and the selection principle of the system parameters was obtained.