摘要
提出了一种基于鉴相器的自动频率控制(AFC)系统,使用移相网络和鉴相器实现鉴频特性曲线,将各种因素造成的频率偏差转化为符号函数,结合频率合成技术,从而形成一种宽频率跟踪范围的AFC系统。
This paper presents a kind of automatic frequency control（AFC）system based on the phase discriminator,uses the phase shifting net and the phase discriminator to realize the curve of frequency discriminating characteristics,translates the frequency deviation generated by various factors into the sign function,thereby forms a kind of AFC system with wide frequency tracking scope combining with the frequency synthesis technique.
出处
《舰船电子对抗》
2010年第3期93-95,共3页
Shipboard Electronic Countermeasure
关键词
雷达接收机
鉴相器
自动频率控制
频率合成器
radar receiver
phase discriminator
automatic frequency control
frequency synthesizer
