摘要
针对数字传输网络中的同步数字体系(SDH)网络设备个体识别问题,提出了一种基于指针调整的细微识别特征。首先,在对SDH指针调整机理分析的基础上,指出了指针调整与设备时钟偏差之间的具体关系,提供了指针调整作为细微识别特征的理论依据;其次,通过检测数据中指针调整状态的变化,提取了指针调整的帧号作为特征序列;最后,以高斯混合模型对一阶差分特征序列进行建模,并将模型参数作为细微识别特征。实验结果表明,基于指针调整的细微特征具有稳定性和区分性,可有效地区分不同的SDH网络设备。
The research focus of this paper was on the problem of synchronous digital hierarchy（SDH）device identification in synchronous digital transmission network,and a novel fine-feature based on pointer adjustment proposed.Firstly,the mechanism of pointer adjustment was analyzed,and the relation between pointer adjustment and clock discrepancy was presented,supporting the validity of pointer adjustment as a fine feature in theory.Secondly,the states of pointer adjustment were recorded,and the frame numbers formed as a sequence.Finally,the first-order difference of the sequence was computed,and it was modeled by Gaussian mixture model whose parameters were taken as the identification features.Our experimental results show that the features are effective to identify different devices.
出处
《解放军理工大学学报（自然科学版）》
EI
北大核心
2015年第1期23-28,共6页
Journal of PLA University of Science and Technology(Natural Science Edition)
关键词
个体识别
细微特征
SDH网络设备
指针调整
高斯混合模型
individual identification
fine features
SDH network device
pointer adjustment
Gaussian mixture model
