摘要
针对不同引信发射信号载波频率分布范围大,且各引信体制、载波频率、调制脉冲宽度、脉冲重复周期及伪码调制周期不同等特点,对通用化引信复杂调制信号相干载波提取技术进行了研究,提出了一种宽带、多体制兼容引信相干载波提取方法。该方法采用高速鉴频、大范围自动锁频环及特殊的同相-正交锁相环相结合,可快速精确锁定引信的工作频率,实现相干载波提取及稳定跟踪。系统调试表明,采用该方法可满足系统要求。
In view of the fact that different fuses have large distribution of carrier frequency, and that fuse system, carrier frequency, modulation pulse width and pulse repetition period are also different for fuses of different types, a method on coherent carrier synchronization suiting wideband and muhi-sys- tern compatible fuse simulator is proposed. This method is combined with high speed analog frequency discriminator, wide-range automatic frequency-locked loop and costas loop. It can accurately lock fuse work frequency to achieve coherent carrier synchronization. The system test shows that it can satisfy re- quirements.
出处
《现代防御技术》
北大核心
2012年第4期150-154,161,共6页
Modern Defence Technology
关键词
窄脉冲调制
伪码调相
频率跟踪
锁相
载波提取
narrow pulse modulation
pseudorandom code phase modulation
frequency tracking
phase-locked
carrier synchronization
