一种基于广义似然比检测的雷达目标识别新方法

为了实现发射周期内目标的实时识别,首先建立了E脉冲激励下目标回波的二元假设检验模型,在此基础上导出了识别目标的广义似然比检测量,并从理论上给出了计算目标识别概率的解析表达式.基于数值计算的三种细导线目标散射场数据的仿真实验以及理论计算结果表明,本文提出的基于广义似然比检测目标识别新方法的实验目标识别性能与其理论计算值是一致的,且其目标识别性能优于直接发射E脉冲目标识别方法.

NEW APPROACH TO RADAR TARGET IDENTIFICATION USING A GENERALIZED LIKELIHOOD RATIO TEST

To accomplish the target identification in real time during a pulse repetition period,a binary hypothesis test model was firstly established for the scattering signature of a conducting target illuminated by an E-pulse waveform.According to the model,a generalized likelihood ratio test rule was developed for the target identification,and then the analytical expression to calculate the target identification performance was theoretically given.The simulation and analytically calculated results based on scattering signatures of three finite thin wire targets show that the simulation performance of the proposed method is excellently consistent with its analytical results,and is superior to that of the method using directly transmitted E pulse.