数字侦察接收机中的瞬时频率测量技术  

The Technology of Measuring Instant Frequency in Digital Reconnaissance Receiver

作　　者：董晖[1] 姜秋喜[1] 毕大平[1] 

机构地区：[1]解放军电子工程学院,合肥230037

出　　处：《电子对抗技术》2005年第5期7-10,22,共5页

基　　金："十五"国防预研基金项目(41101030302)

摘　　要：介绍了侦察接收机中基于瞬时自相关的瞬时频率测量方法,并在DSP上实现了这一方法。仿真实验证明,该方法能够实时测量雷达脉冲信号的瞬时频率,在一定信噪比条件下有较高的测频精度,测量出的瞬时频率包含了脉冲信号的脉内细微特征,可以作为识别脉冲信号的依据。The technology of extracting instant frequency in digital reconnaissance receiver is given and realized by DSP. The simulation experiment results prove that this technology can extract radar pulse instant frequency on real-time and have high frequency measure precision on definite SNR. The extracted instant frequency included pulse finger-prints and can be as the pulse recognition basis.

关 键 词：数字接收机 瞬时频率 DSP 脉内细微特征 

分 类 号：TN971.1[电子电信—信号与信息处理]