【摘要】 最优化列阵滤波理论是针对一级包含有效波和相干干扰波的多道记录信号而提出的。它通过对一组多道记录作列阵滤波处理，让相干干扰信号尽可能得到衰减，同时完好保存有效信号。这种滤波以最优化过程取代了混波过程去噪，使得信号在不降低分辨率的条件下压制相干噪声，提高信噪比。本文从理论和实际应用方面对该方法的高分辨率去噪特性进行了研究。其结果表明：无论是对叠后剖面还是对叠前道集记录，最优化列阵滤波既可达到高分辨率又可收到提高信噪比的效果。更多还原

【Abstract】 The theory of optimized array filtering is advanced to cope with the multi-channel seismic data which include effective wave and coherent noise. Array filter-ing is applied to multichannel seismic data, so that coherent noise is suppressed as much as possible while effective wave is preserved very well. In this filtering, noise elimination is achieved by optimization process instead of wave mixing process, so that coherent noise is suppressed to raise signal/noise ratio, without resolution damaged.High-resolution noise suppression is analysed theoretically and practically. It is shown that the optimized array filtering can achieve good resolution and high sig-nal/noise ratio of both stacked seismic section and prestack seismic gathers.更多还原