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本文提出在f-k域中算子形态为椭圆形的滤波器。该滤波器与传统的二维滤波器相比，具有不存在尖点、一阶和二阶导数连续的特性，并且是解析的。同时，给出了该滤波器在实际资料处理中的应用实例。即在扩大的共反射面元上把相邻几个NMO道集组成的大道集以特定的方式重新排列，再通过f-k域椭圆滤波，使干扰波得到压制。实际资料处理结果表明，这种方法在提高资料信噪比的同时，还较好地保持了反射信息的波形特征和振幅特征。
In this paper, we propose a filter whose shape is oval in f-k domain. Compared with the traditional two-dimensional filter, the filter has the characteristic of no sharp point, continuous first and second derivatives, and is analytic. At the same time, the application examples of the filter in the actual data processing are given. That is, on the extended co-reflector bins, a set of adjacent corridors of NMO gathers are rearranged in a certain way, and then interference waves are suppressed by f-k domain elliptic filtering. The actual data processing results show that this method not only improves the signal-to-noise ratio of the data, but also keeps the waveform characteristics and the amplitude characteristics of the reflected information well.