| 摘要: |
| 针对线性调频-伪码调相复合调制雷达信号（LFM-PRBC）的截获与特征提取问题，
提出了一种基于分数阶傅里叶变换（FrFT）平面切割与相关检测相结合的新方法。理论
分析和计算机仿真验证表明，该方法具有较好的有效性和准确性，能快速完成高斯白噪声背
景下低信噪比复合调制雷达信号的截获与特征提取，有一定的实际应用价值。 |
| 关键词: 低截获概率雷达 线性调频 伪码调相 复合调制 分数阶傅里叶变换 特征提取 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目(60902054) |
|
| Interception and feature extraction of LFM-PRBC combined modulation radar signal based on FrFT |
| XIANG Chong-wen,HUANG Yu,WANG Ze-zhong,LIU Feng |
| () |
| Abstract: |
| For the problem that interception and feature extraction of linear fre
quency modulation-pseudo random binary codes(LFM-PRBC) phase modulation combin
ed radar signal, a novel method composed of cutting plane and correlation detect
ion based on the Fractional Fourier Transform (FrFT) is presented. Through theoret
ical analysis and computer simulation, its validity and accuracy are suitable to
achieve feature extraction of combined modulation radar signal quickly with a l
ow signal to noise ratio（SNR）in Gaussian white noise background.This method ha
s application value. |
| Key words: LPI radar linear frequency modulation pseudo random binary codes phase modulation combin
ed modulation Fractional Fourier transform feature extraction |
