摘要
对未知雷达辐射源信号进行准确分选是当前电子对抗领域亟待解决的一个难题。基于小波包变换(WPT)可实现多种不同调制信号的分类,且对噪声不敏感,但对于相同调制样式不同调制参数的信号则无效。该文提出一种基于WPT-PRI的新方法,首先利用WPT实现不同调制样式信号的分类,对于具有相同调制样式、不同调制参数的信号基于脉冲重复间隔(PRI)进一步细分。仿真结果验证新方法准确有效。
It is a difficult problem to accurately sorting unknown radar emitter in the electronic countermeasure field at present.Different kinds of modulation signals can be sorted by wavelet package transformation（WPT）,but it is not sensitive to noise,while WPT is useless to those signals which have same modulated type but different modulated parameter.A new method based on WPT-PRI was proposed in this paper.Different kinds of modulation signals were sorted by WPT,then the signal which had same modulated type and different modulated parameter was further sorted by pulse repetition intervals（PRI）.Simulation results showed that this new method was effective.
出处
《压电与声光》
CSCD
北大核心
2010年第3期375-378,共4页
Piezoelectrics & Acoustooptics
基金
武器装备预研基金资助项目(51437030105HK101)
