三维激光成像探测系统建模与仿真

 激光成像探测系统仿真是评估现有激光成像系统的性能及开发新型激光成像探测技术的有效手段。研究激光脉冲回波信号特性并建立数学模型是应用回波信号检测技术处理回波,进行激光成像系统仿真的关键。为此以激光发射脉冲模型为基础对激光脉冲回波信号的建模过程和基于单位冲激响应的目标散射特性建模方法作了详尽的推导和描述,并建立检测算法模型,最后依据目标成像模板采用单元回波探测线阵化方式进行了推帚式三维激光成像仿真。结果表明,该仿真系统可实现不同探测条件下线阵推帚式激光成像的有效仿真。

Modelling and Simulation of 3D Laser Imaging Detection System

Simulation is an effective method to evaluate the performances of existing laser imaging systems and to develop novel laser imaging detection technologies. The characteristics of laser pulse returned signals and the establishment of the related models are of vital importance for the echo signal processing and the laser imaging simulation. This paper studies the modelling procedure of the returned signals based on the laser transmitted pulse model, and the modelling method for target scattering properties based on the unit impulse response is discussed in detail, to deveop detection algorithm models. The simulations of 3D laser imaging based on linear array scanning in the pushing-broom are carried out by means of arraying the single return detection. The results show that the laser imaging simulation can yield the simulated images effectively under a wide variety of conditions.