遮蔽目标的激光雷达回波信息处理  

Information Processing of Lidar Echo for Obscure Target

作　　者：黄涛[1,2] 胡以华[1,2] 

机构地区：[1]脉冲功率激光技术国家重点实验室,安徽合肥230037 [2]安徽省电子制约技术重点实验室,安徽合肥230037

出　　处：《光电技术应用》2011年第1期27-30,共4页Electro-Optic Technology Application

基　　金：国家自然科学基金(60672154)

摘　　要：为了探索利用激光雷达探测遮蔽目标,研究了遮蔽目标对激光雷达回波波形的影响,取得了遮蔽目标激光雷达回波波形的仿真数据。采用Levenberg-Marguardt算法对回波非线性拟合,实现了对回波波形的高斯分解,获取了高斯回波分量的个数、位置、半宽和幅度等参数。通过对各个通道分离子波的时间匹配,得到了各个子目标在不同通道的回波分量,由不同通道回波分量的幅值可以获取其反射率比值及退偏度,实现对各目标回波的特征提取。In order to detect the obscure target by using lidar（light detection and ranging）,the influence of obscure target on lidar echo waveform is studied,and its simulation data are obtained.Fitting the nonlinear waveforms by using Levenberg-Marguardt algorithm,which break down waveforms into a series of Gaussian components,and obtain the number,position,half-width and amplitude of each Gaussian component.Echo components of sub-target in different channels are obtained via time matching of separate sub-echoes respectively;the ratio of reflectivity and depolarization degree are obtained via amplitude of waveform component,which can achieve the characteristic extraction of various targets.

关 键 词：激光雷达 回波分解 特征提取 Levenberg-Marguardt算法 遮蔽目标 

分 类 号：TN249[电子电信—物理电子学]