摘要
电子战系统通常使用宽瞬时带宽,在其中可能存在直扩信号,频谱监测方不知道是否存在直扩信号、信号数目、所处频带位置等信息。针对这种情况提出了一种宽带内多直扩信号的快速检测方法,该方法应用波动相关法,检测策略上利用分段滤波分离各个直扩信号并且提高信噪比,然后分析了该方法的检测性能。通过仿真验证了该方法的有效性和实用性。
Electronic warfare system usually uses a wide instantaneous bandwidth, in which may exist DSSS signals, in non-cooperative context such as spectrum surveillance, whether there exists DSSS signal, the number of signals and their position in frequency domain are all unknown. A new multi DSSS signals detection method aimed at this situation is presented. This method uses fluctuations of correlation estimators, with the help of band-pass filters, makes every DSSS signal isolate in frequency domain, and enhances signal to noise ratio. Then, an analysis of performance of this method is presented. The computer simulation demonstrates the effectiveness and the practicality of this method.
出处
《计算机工程与应用》
CSCD
2014年第13期224-227,共4页
Computer Engineering and Applications
关键词
波动相关法
宽带检测
直扩信号检测
非合作
correlation estimators
wideband detection
DSSS signal interception
non-cooperative
