复杂脉内调制雷达信号的识别方法  

Identification method for complex modulated radar signals

作　　者：李明晏[1] 张鲁筠[1] 江铭炎[1] 许建华[2] 张超[2] 

机构地区：[1]山东大学信息科学与工程学院,济南250100 [2]电子测试技术国家重点实验室,山东青岛266555

出　　处：《计算机工程与应用》2011年第15期156-159,164,共5页Computer Engineering and Applications

基　　金：国家部委基金项目

摘　　要：提出一种识别包括相位编码、频率编码,以及脉内混合调制等复杂雷达信号的方法。该方法结合AR模型功率谱估计分析方法和小波变换模极大值方法,将复杂混合调制信号转化成相位编码信号,然后基于高次方频谱分析的方法提取信号的频率特征,首次实现了对6种复杂雷达信号的分类。实验表明,在信噪比为0dB时,大多数信号的识别率可以达到93以上。This paper proposes a method to identify the complex radar signals, such as phase-shift keying signal, frequency-shift keying signal and hybrid modulation signal.Based on the combination of AR model power spectrum estimation and modulus maxima of wavelet transform, the complex modulated signals are converted into phase-shift keying signals.Then the frequency characteristics of the signals are extracted by high-order spectrum analysis.Simulation results show that the proposed method can identify up to six kinds of complex radar signals, and most signals can achieve more than 93% recognition accuracy when SNR is above 0 dB.

关 键 词：脉内混合调制雷达信号 AR模型功率谱分析 模极大值 高次方频谱分析 

分 类 号：TN911.7[电子电信—通信与信息系统]