基于非线性加权K-相关的核爆地震识别  

Identification of underground nuclear explosions and natural earthquakes based on K-correlation of nonlinear weighting

作　　者：刘代志[1] 李夕海[1] 何志文[1] 张斌[1] 

机构地区：[1]第二炮兵工程学院602室,陕西西安710025

出　　处：《核电子学与探测技术》2005年第6期587-589,604,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(40274044)资助

摘　　要：地下核爆炸和天然地震的识别一直是国际核查的重点研究内容之一,基于地下核爆炸和天然地震事件的相关性,提出了一种非线性加权K-相关分类方法,对地下核爆炸和天然地震进行分类,详细阐述了它的分类原理,讨论了训练样本个数和K值两个参数的选取问题,并将它和最大相关法及K-近邻法进行了比较。实际分类结果表明了该方法的有效性。Automatic discrimination of underground nuclear explosions and natural earthquakes is always worth to study because of the problem of classification accuracy. In this paper, a method of nonlinear weighting K-correlation is proposed to discriminate the underground nuclear explosions and natural earthquakes, the basic idea is that the sum of K correlation coefficients for each class is used as a criterion to discriminate these two kinds of events, and to magnify the difference of this criterion to identify these two events with higher probability, a method of nonlinear weighting is used. Besides, the comparison with the maximum correlation classification and k-nearest neighbor classification is expatiated. Theoretical analysis and practical identification results indicate this method is feasible.

关 键 词：特征相关 非线性加权 核爆炸 地震 

分 类 号：O235[理学—运筹学与控制论] TL91[理学—数学]