激光主动照明探测建模和仿真  

Modeling and Simulation of Laser Active Illumination Detection

作　　者：张璐[1] Zhang Lu(Xidian University,Xi'an 710071,China)

机构地区：[1]西安电子科技大学,西安710071

出　　处：《航空兵器》2020年第4期103-108,共6页Aero Weaponry

基　　金：航空科学基金项目(2016018002)。

摘　　要：激光照明主动探测由于受到大气湍流引起的波前畸变和光强起伏以及目标粗糙表面调制的影响,使主动探测系统分辨率降低,作用距离减小,严重影响系统性能。本文考虑目标粗糙表面的调制作用和大气湍流的影响,建立主动探测过程中光束传输综合模型,基于综合模型,对单光束探测和多光束叠加探测过程进行了仿真分析。仿真结果表明了模型的准确性,同时显示了多光束探测对回波光场散斑和大气湍流具有较好的抑制效果。Due to the effect of wavefront distortion and intensity fluctuation induced by atmospheric turbulence and modulation caused by target’s rough surface,it will be reduced the system’s resolution and range coverage,so as to affect the laser active illumination detection system performance greatly.In this paper,the modulation caused by target’s rough surface and the effect of atmospheric turbulence are considered jointly,and a comprehensive model of laser propagation in the process of active detection is built.Based on this model,the single laser beam detection and the multiple laser beam superimposition detection are simulated and analyzed.The results verified the accuracy of the model,and manifested that multiple beam detection can mitigate the speckle of the echo optical field and atmospheric turbulence.

关 键 词：大气湍流 散斑 激光 主动探测 多光束 

分 类 号：TN249[电子电信—物理电子学] TP391.9[自动化与计算机技术—计算机应用技术]