| 直扩信号特征提取技术 |
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| 引用本文： | 陈强,马媛,牛景昌. 直扩信号特征提取技术[J]. 无线电工程, 2010, 40(8): 10-12 |
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| 作者姓名： | 陈强 马媛 牛景昌 |
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| 作者单位： | 1. 中国电子科技集团公司第五十四研究所,河北,石家庄,050081
2. 石家庄信息工程职业学院,河北,石家庄,050035 |
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| 摘 要： | 介绍了直扩系统的基本原理。针对能够集中体现直接序列扩频(DSSS)信号波形和频域的特征,对时域相关检测法、循环谱检测法、倒谱检测法和高阶累积量检测法进行了深入的分析与研究。采用上述数字信号处理技术分别对DSSS信号进行特征提取的仿真和验证,并给出了每种检测技术的性能及优缺点。
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| 关 键 词： | 直扩信号 特征提取 循环谱 高阶累积量 |
A Feature Extraction Technique for DS Signals |
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| CHEN Qiang,MA Yuan,NIU Jing-chang. A Feature Extraction Technique for DS Signals[J]. Radio Engineering of China, 2010, 40(8): 10-12 |
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| Authors: | CHEN Qiang MA Yuan NIU Jing-chang |
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| Affiliation: | 1.The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China;2.Shijiazhuang Information Engineering Vocational College,Shijiazhuang Hebei 050035,China) |
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| Abstract: | The basic principles of DS system were introduced.In-depth analysis and research results were given on time domain correlation detection method,cyclic spectral detection method,cepstrum detection method and high-order cumulant,so as to reflect the direct sequence spread spectrum （DSSS） for the signal wave and frequency domain feature.The digital signal processing techniques were used on the DSSS signal simulation and verification feature extraction.And the performance of each detection and advantages and disadvantages were given. |
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| Keywords: | DS signal feature extraction cyclic spectrum higher-order cumulant |
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