低信噪比地震记录中信号初至的估计

来源 :西安交通大学学报 | 被引量 : 8次 | 上传用户：striveadvance

【摘要】

：

给出一种基于赤池信息量准则(AIC)算法和信号幅值比的混合方法来估计低信噪比地震记录中信号的初至.用信号的AIC曲线和幅值比曲线构造一种叠加曲线,对叠加曲线进行类似于坐标旋转的校正,利用校正后的叠加曲线可以准确估计低信噪比记录中信号的初至.用该方法对乌鲁木齐台记录到的35次天然地震中P波、S波和Lg波进行初至估计,P波初至估计误差的均方误差为0 71,后续震相(S波、Lg波)初至估计误差的均方误差

【作者】

：

王海军靳平刘贵忠

【机构】

：

西安交通大学电子与信息工程学院,西北核技术研究所

【出处】

：

西安交通大学学报

【发表日期】

：

2003年06期

【关键词】

：

地震初至幅值比

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低信噪比地震记录中信号初至的估计

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