基于JEM效应的一种雷达目标识别方法

Recognition Algorithm of Radar Target Based on JEM Effect

根据ＪＥＭ（喷气发动机调制）效应和雷达目标回波谱经特点，本文提出了一种雷达目标识别方法。此方法是利用小波变换，得到雷达目标回波信号的频率调频指数，对信号进行相位补偿，然后滤掉信号中的机身频谱和多普勒频谱，再进行相位补偿，用ＦＦＴ（快速傅立叶变换）就可以得到目标的调制谱，由此实现目标识别。由实测数据进行分机处理，证明利用目标的调制谱识别目标，认识效果很好。

On the basis of jet engine modulation effect and characteristic of target echo spectrum, a method of radar target identification is presented in this paper. This method is using Morlet wavelet transform,phase compensating, filtering ,extracting the modulation spectrum of radar target by FFT, then radar target is detected. The processing results of practical data prove that the method is effective.