摘要
利用奇异系统分析方法研究了低信噪比混沌信号的相空间重构。通过对不同信噪比洛伦兹信号以及四类目标舰船信号进行重构 ,表明该方法比传统的延迟坐标法具有更大的优越性。通过计算状态轨迹的L2 范数 ,对混沌信号的奇异谱进行了定量描述 。
The state space reconstruction of chaotic signals having low S/N ratio was investigated by means of Singular System Analysis (SSA). After the reconstruction of Lorenz signals with different S/N ratios and four types of ship noise signals, it is found that SSA has more advantages than the Method of Delay (MOD) as an traditional method in chaos theory. By calculating the L 2 norm of state trajectories, the singular spectrum of chaotic signal is quantitatively determined. It suggests a new method for the feature extraction in chaotic signatls.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2002年第1期102-105,共4页
Acta Armamentarii
基金
国防科技预研基金资助项目 (2 0 0 0J5 .3 .2HK0 3 0 7)
