| PN序列估计与扩频隐藏信息分析 |
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| 引用本文： | 谢春辉,程义民,陈扬坤.PN序列估计与扩频隐藏信息分析[J].电子学报,2011,39(2):255-259. |
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| 作者姓名： | 谢春辉 程义民 陈扬坤 |
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| 作者单位： | 中国科学技术大学电子科学与技术系, 安徽合肥 230027 |
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| 摘 要： | 在非协作信息侦测情况下,提出了一种直接序列扩频(DS-SS)信号PN序列的估计方法,在此基础上实现了扩频隐藏信息的盲提取.该方法以估计序列和扩频信号的累积相关值为目标函数,建立估计序列长度及其构成的两变量优化模型,通过遗传算法求解,可较好地估计出PN序列.通过获取的PN序列与藏密信号的相关性分析,可实现扩频隐藏信息的盲...
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| 关 键 词： | 直接序列扩频 PN序列 扩频隐藏 隐藏分析 遗传算法 |
| 收稿时间： | 2009-10-17 |
PN Sequence Estimation and Spread-Spectrum Steganalysis |
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| XIE Chun-hui,CHENG Yi-min,CHEN Yang-kun.PN Sequence Estimation and Spread-Spectrum Steganalysis[J].Acta Electronica Sinica,2011,39(2):255-259. |
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| Authors: | XIE Chun-hui CHENG Yi-min CHEN Yang-kun |
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| Affiliation: | Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China |
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| Abstract: | An efficient method that can estimate PN sequence of direct sequence spread spectrum(DS-SS) signal is presented in a non-cooperative context,on this base,spread-spectrum hidden message can be extracted blindly.At first,the optimization model with the cumulative correlation value between estimate sequence and SS signal as the objective function is established,and then the PN sequence can be estimated by Genetic Algorithm.Finally,by analyzing the correlation between PN sequence and stego-signal,the hidden mes... |
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| Keywords: | direct sequence spread-spectrum pseudo-noise sequence spread-spectrum steganography steganalysis generic algorithm |
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