一种新的频率调制雷达信号识别方法  

A new recognition method for frequency modulate signal

作　　者：胡鑫磊[1] 张国毅[1] 王晓峰[2] 

机构地区：[1]空军航空大学信息对抗系,吉林长春130022 [2]海军航空工程学院,山东烟台264001

出　　处：《航天电子对抗》2015年第1期37-40,共4页Aerospace Electronic Warfare

摘　　要：频率调制信号广泛应用于现代雷达中,针对此类信号的调制方式识别问题,提出了一种新的识别方法。该方法首先提取信号的二次相位函数(QPF)脊线,然后根据脊线的线性拟合误差将信号分为两类,最后分别通过Radon变换和曲率半径识别出信号的具体调制类型。仿真表明,该方法具有良好的抗噪性和较高的识别正确率。Frequency modulate signal is widely used in modern radar. Aiming at recognition of this kind signal, a new identification method is put forward. Firstly, the QPF maxima is extracted. Then, through the linear fitting error of maxima, the signal is classified into two categories. Finally, modulation types are recognized separately through Radon transform and curvature radius. Simulation results verify that this method has great anti noise performance and high correct identification ratio.

关 键 词：信号识别 二次相位函数 曲率 

分 类 号：TN957.51[电子电信—信号与信息处理]