摘要
在宽带数字信道化处理的基础上对线性调频信号、二相编码信号和四相编码信号三种典型的脉冲压缩雷达信号进行识别。从便于工程实现的角度出发,采用一种由粗到细的方法。通过设置一定的带宽门限值,粗识别为线性调频信号和相位编码信号两大类,再采用8点累加时域瞬时自相关法,通过相位跳变累加值的不同,实现对相位编码信号的细识别。仿真结果表明,该方法可实现对低截获概率体制雷达信号的调制类型识别。
On the basis of wideband digital channelized processing,linear frequency modulation signal,biphase shift keying signal and quadrature phase shift keying signal which are three typical pulse compression radar signals are recognized. From the perspective of facilitating project implementation,a method that from coarse recognition to fine recognition is adopted. By setting a certain bandwidth threshold,coarse recognition is performed as the linear frequency modulation signal and phase shift keying signal. Adopting an 8 points cumulative time-domain instantaneous autocorrelation,through the difference in phase jump accumulative values,the fine recognition to phase shift keying signal is implemented. The simulation results show that this method can realize the modulation type recognition of low probability of intercept radar.
作者
米胜男
邓磊
曲志昱
司伟建
Mi Shengnan Deng Lei Qu Zhiyu Si Weijian(College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China Shanghai Radio Equipment Research Institute, Shanghai 200090, China)
出处
《航空兵器》
2016年第6期61-65,共5页
Aero Weaponry
基金
航空科学基金项目(201401P6001)
中央高校基本科研业务费专项资金项目(HEUCF150804)
关键词
低截获概率雷达
数字信道化
调制类型识别
线性调频信号
相位编码信号
low probability of intercept radar
digital channelization
modulation type recognition
linear frequency modulation signal
phase shift keying signal
