复杂体制脉冲重复间隔调制方式识别  

Modulation Type Recognition of Complex Pulse Repetition Interval

作　　者：胡国兵[1,2] 刘渝[1] 邓振淼[1] 张刚兵[1] 胥嘉佳[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,南京210016 [2]南京信息职业技术学院电子信息工程系,南京210046

出　　处：《数据采集与处理》2010年第6期722-726,共5页Journal of Data Acquisition and Processing

摘　　要：给出了一种新的雷达脉冲信号脉冲重复间隔PRI(Pulse repetition interval)调制方式识别算法。在分析PRI序列的时域及频域特性的基础上,定义了零交叉密度、谐波幅度比、PRI序列差分极性3个分类特征。特征提取方法简单且可在小样本条件下实现。此外,对于周期性调制PRI,可估计PRI调制周期。计算机仿真结果表明,本算法在有测量噪声、脉冲丢失、虚假脉冲条件下具有稳健的识别性能。A novel recognizer for automatically reporting the pulse repetition interval（PRI） modulation type of a radar pulse signal is developed.The proposed method utilizes the features based on the properties of PRI sequence for each PRI modulation type both in time and frequency domains.These features are defined as zeros-crossing density,harmonic amplitude ratio and sign properties of difference of the PRI sequence,thus they can be easily extracted from PRI sequences with small sample sizes.In addition,the proposed method can be used to estimate the PRI modulation period for the periodic PRI modulation type signals.Simulation results show that the proposed approach is robust in the presence of measurement noises,missing and spurious pulses.

关 键 词：调制方式识别 脉冲重复间隔调制 特征分析 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术] N941.5[自动化与计算机技术—计算机科学与技术]