吸引子分析与核爆地震模式识别

本文利用从时域地震信号中提取的各种特征值来构造相空间,对四组样本进行的结果发现,在该相窨中两个“吸引子”;地下核爆炸吸引子和天然在震吸引子,求得吸引子的关联维数均为分数维,且小于相空间的维数,当相空间的维数从低到高增加时,吸引子维数明显出现饱和值;不同吸引子的分维数不同,本文还提出了“吸引中心”的概念,并就吸引子、吸引子数、吸引中心和吸引域等在核爆地震模式识别中的应用问题进行了探讨。

Attractor Analysis in Seismic Pattern Recognition of Nuclear Explosion

In this paper,the phase space is constructed by various features extracted from seismic signalsin time domain. The results of calculation for four sets of samples indicate that there are two"attractors" in thephase space: one is the attractor for underground nuclear explosion, another is for natural earthquake. The yieldedcorrelation dimension are all the fortal dimensions, and less than the dimension of phase space. When the dimensions of phase space increased ho low to high,the dimensions of the attractors become apparently saturated,and different attractors have different fractal dimensions. A new concept, namely, the "attraction center" isproposed in this paper. Moreover, the attractor, the attractor dimension, and the attraction center with their applications to seismic pattern recognition of undegrund nuclear explosion are also explored.