基于EMD方法的雷达侦察信号幅度包络提取  

Radar Reconnaissance Signal Amplitude Envelop Extraction Based on EMD Method

作　　者：张洪亮[1] 杨承志[1] 

机构地区：[1]空军航空大学航空信息对抗系,长春130022

出　　处：《电子对抗》2010年第5期7-11,共5页Electronic Warfare

摘　　要：雷达侦察信号的幅度包络是由雷达天线和雷达侦察天线的扫描产生的，是雷达侦察信号分选、定位等处理的重要参考信息。由于信号衰减与干扰信号的存在导致信号幅度不具有紧致性，基于临近准则的模式识别等智能计算方法很难提取雷达侦察信号幅度包络。针对该问题，提出了基于EMD（经验模态分解）方法的雷达侦察信号幅度包络提取算法，计算机仿真结果表明，该方法可以有效的从干扰和噪声中提取信号的幅度包络，对于雷达侦察信号处理具有重要意义。Radar reconnaissance signal amplitude envelop formed by scanning of radar and reconnaissance antenna, it is an important information of signal sorting and positioning. The attenuation and noisy caused signal amplitude dispersed, and the intellective operation method as pattern recognition can not extract the envelop. The EMD（Empirical Mode Decomposition） method is put forward to solve the problem, computer simulation shows that the EMD method can extract the amplitude envelop effectively in the attenuation and noisy background, the method has a significant meaning in radar reconnaissance signal processing.

关 键 词：雷达侦察 幅度包络提取 经验模态分解 

分 类 号：TN957.51[电子电信—信号与信息处理]