| 分数阶傅里叶变换（FRFT）用于调制方式识别 |
| |
| 引用本文： | 袁兰杰,王科攀,高勇. 分数阶傅里叶变换（FRFT）用于调制方式识别[J]. 电子信息对抗技术, 2011, 26(4): 26-29 |
| |
| 作者姓名： | 袁兰杰 王科攀 高勇 |
| |
| 作者单位： | 四川大学电子信息学院,成都,610065 |
| |
| 摘 要： | 提出了一种基于分数阶傅里叶变换（FRFT）的通信信号调制方式自动识别方法。给出了FRFT归一化修正零均值幅度这一特征,用于模拟调制信号与数字调制信号联合自动识别。新方法分析了多种常用调制信号的FRFT谱特性,利用分数阶傅里叶变换可以展示出信号从时域逐步变化到频域的所有变化特征的特性,可以很好地分类识别多种调制信号。实测数据和仿真结果表明,在调制信号的信噪比大于10dB时,其总体识别率达90%以上。该方法具有识别效率高,识别效果好等优点,并具有实用性和可行性。
|
| 关 键 词： | 调制识别 FRFT 特征提取 |
Modulation Identification Based on Fractional Fourier Transform(FRFT) |
| |
| YUAN Lan-jie,WANG Ke-pan,GAO Yong. Modulation Identification Based on Fractional Fourier Transform(FRFT)[J]. , 2011, 26(4): 26-29 |
| |
| Authors: | YUAN Lan-jie WANG Ke-pan GAO Yong |
| |
| Affiliation: | YUAN Lan-jie,WANG Ke-pan,GAO Yong(College of Electronics and Information Engineering,Sichuan University,Chengdu 610065,China) |
| |
| Abstract: | Based on Fractional Fourier Transform(FRFT),a new method for automatic identification of communication modulated signal is put forward.The maximum value of the FRFT spectral power density of the intercepted signal is used to the identification algorithm of analog and digital modulation types.FRFT spectral characteristics of common modulated signals are analyzed in the new method,and a good classification effect can be got because the gradual changing characteristics of the signal from time domain to frequen... |
| |
| Keywords: | modulation identification FRFT feature extraction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
