| 引用本文: | 许丹,柳征,姜文利,等.一种基于交叉关联积分的功放无意调制识别方法.[J].国防科技大学学报,2008,30(3):116-121.[点击复制] |
| XU Dan,LIU Zheng,JIANG Wenli,et al.An Unintentional Modulation Identification Method of Power Amplifier Based on Cross-correlation Integral[J].Journal of National University of Defense Technology,2008,30(3):116-121[点击复制] |
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| 一种基于交叉关联积分的功放无意调制识别方法 |
| 许丹, 柳征, 姜文利, 周一宇 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 针对同频率连续波信号中的功放指纹分析问题，提出一种基于相空间交叉关联积分的无意调制识别方法(CCI-UMI)。该方法通过对功放无意调制的机理分析和对重构矢量沿轨迹概率(PDT)的理论分析，建立了相轨迹比较的基本理论依据和参数选择方法。采用多尺度交叉关联积分算法，在重构相空间实现了对信号细微差别的灵敏比较。对任意波发生器两路通道实测数据的分类实验表明：本方法识别率较高，经合理选择参数，在低信噪比下可获得比功率谱方法和相空间微分方法更好的分类性能。 |
| 关键词: 辐射源识别 辐射源个体识别 无意调制 连续波信号识别 相空间重构 交叉关联积分 |
| DOI： |
| 投稿日期：2007-10-28 |
| 基金项目:国家部委基金资助项目 |
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| An Unintentional Modulation Identification Method of Power Amplifier Based on Cross-correlation Integral |
| XU Dan, LIU Zheng, JIANG Wenli, ZHOU Yiyu |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A Cross-correlation Integral based Unintentional Modulation Identification (CCI-UMI) method is proposed for Power Amplifier (PA) fingerprinting, assuming that the PA is excited by continuous signals of the same frequency. The model of the PA and the theory probability density along trajectory is presented. Then an algorithm is given, using multi-scale comparison to distinguish the two signals with tiny difference. The actual measurement experiment of the signal generator shows that the developed CCI-UMI method is better than the Power Spectral Density based method and the Phase Space Difference method in lower SNR. |
| Keywords: emitter identification specific emitter identification unintentional modulation phase space cross-correlation integral |
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