虚同相轴法预测地震层间多次波在实际应用中的可行性分析

针对虚同相轴法在实际应用中存在多次波的高效匹配、其他噪声的干扰以及观测系统的影响等问题,通过对模型数据的研究,提出一种基于高阶高分辨率Radon变换的高效匹配方法,在匹配时间和效率两方面有很大提高。对传统范数匹配方法中的滤波矩阵、时窗长度进行定量分析和优化选取,对虚同相轴方法的抗噪能力以及观测系统的影响进行定量分析,并讨论其适用范围。研究结果对该方法的实际应用有一定的参考意义。

Feasibility Analysis on Practical Application of Virtual Events Method in Predicting Seismic Interbed Multiples

There are problems such as efficient match of multiples, influence of other noise and geometry when the virtual events method is used in real data. By studying on model data, an efficient matching method based on high-order and high-resolution Radon transform was presented, which had advantages in matching time and effect. There are also some quantitative analyses and parametric optimization on filter matrix and length of time window of the traditional matching methods. The authors made some quantitative analyses on the anti-noise capacity of virtual events method and discussed its range of application. The results have some referential meaning when the method is used in real data.