Research on Feature Extraction of Composite Pseudocode Phase Modulation-Carrier Frequency Modulation Signal Based on PWD Transform

被引：0
|
作者：
李明孜 [1 ]
赵惠昌 [2 ]
机构：
[1] Physical Department,Nanjing Xiaozhuang Institute
[2] School of Electronic Engineering and Optoelectronic Technology,Nanjing University of Science and Technology
来源：
Journal of China Ordnance | 2008年 / 4卷 / 04期
关键词：
information processing technology; PWD transform; pseudocode phase modulation; correlation filter; feature extraction;
D O I：
暂无
中图分类号：
TN911.7 [信号处理];
学科分类号：
0711 ; 080401 ; 080402 ;
摘要：
The identification features of composite pseudocode phase modulation and carry frequency modulation signal include pseudocode and modulation frequency. In this paper,PWD is used to extract these features. First,the feature of pseudocode is extracted using the amplitude output of PWD and the correlation filter technology. Then the feature of frequency modulation is extracted by way of PWD analysis on the signal processed by anti-phase operation according to the extracted feature of pseudo code,i.e. position information of changed abruptly point of phase. The simulation result shows that both the features of frequency modulation and phase change position caused by the pseudocode phase modulation can be extracted effectively for SNR=3 dB.
引用
收藏
页码：281 / 284
页数：4
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