摘要
提出了一种采用数字射频储频器的测频方法。该方法首先利用FPGA的FFT快扫阵列技术对瞬时带宽为500 MHz的信号粗测频,再利用Zoom FFT电路进行精测频。此方案能将ESM与ECM集成一体。
This paper presents a kind of frequency measurement method adopting digital radio frequency memory （DRFM）. It firstly measures the frequency of instantaneous bandwidth 500 MHz signal coarsely with FPGA FFT array fast scanning technique, then measures this frequency finely with Zoom FFT circuit. This method makes it possible to integrate ESM with ECM.
出处
《舰船电子对抗》
2005年第5期48-51,共4页
Shipboard Electronic Countermeasure
关键词
数字射频储频器
快速傅立叶变换
测频
digital radio frequency memory
fast Fourier transform
frequency measurement
