现代电子技术Issue(21)：9-14,6.
EW接收机中的一种雷达脉内调制实时识别方法
A real-time recognition method of radar intra-pulse modulation in EW digital receiver
摘要
Abstract
In order to automatically recognize different modulation types of radar pulses in EW digital receiver,a practical method of modulation recognition based on FPGA is proposed. Firstly,the frequency conversion preprocessing of high-speed in-termediate frequency direct acquisition signal is performed. LFM and FSK signals are distinguished by the rough recognition based on frequency characteristic. Then baseband PSK signals sampled at the low speed are precisely recognized with a new algo-rithm of instantaneous autocorrelation to get phase difference. The method has good real-time performance and high reliability, and can meet the need of high sampling rate EW digital receivers if it is implemented on FPGA.关键词
脉内调制/DDC/并行结构/瞬时自相关/FPGAKey words
intra-pulse modulation/DDC/parallel architecture/instantaneous autocorrelation/FPGA分类
信息技术与安全科学引用本文复制引用
李涛,宿绍莹,陈曾平,郭骁..EW接收机中的一种雷达脉内调制实时识别方法[J].现代电子技术,2013,(21):9-14,6.基金项目
863项目基金资助 （）
