基于非线性极化变换的目标识别方法研究

摘要

Distinguishes ship target from chaff by their difference in polarization characteristics,using fully polarized dual-channel radar which transmits vertical and horizontal polarization wave alternately and dual polarization channel receives vertical polarization and horizontal polarization echo signal simultaneously,enlarging the echo signal and transforming nonlinearity polarization of dual-channel echo signal.It could effectively recognize chaff by taking advantage of the difference of the polarization characteristic parameters of the ship target and chaff in dual-channel,the simulation result is proved that the polarization information after nonlinearity polarization transformation has better target recognition effect than in time and frequency domain.%舰船目标和箔条假目标具有不同的极化特性,全极化双通道雷达交替发射垂直极化和水平极化波,双极化通道同时接收垂直极化和水平极化回波信号,对双通道回波信号进行放大、非线性极化变换,能有效增强舰船目标和箔条假目标的极化特性差异。利用舰船目标和箔条假目标双极化通道的极化特性差异,能有效识别箔条假目标,仿真结果表明,利用经过非线性极化变换的极化信息比时域、频域信息具有更好的目标识别效果。