频率控制线性预测最小平方反褶积

FREQUENCY-CONTROLED LINEAR LEAST-SQUARE DECONVOLUTION

上海交通大学,上海200032

Shang Hai Communication University, Shanghai 200032

本文提出了频率控制线性预测最小平方反褶积方法.根据原始资料的信号和噪声功率分布情况,通过适当选择处理后资料的期望主频,采用该方法能同时加宽期望主频的带宽和压制低信噪比的频率分量,使处理后的地震资料在提高分辨力的同时仍具有高的输出信噪比.文中给出了合成数据和叠后地震资料处理结果,说明该方法具有同时提高分辨力和信噪比的优点,并具有原理简单、效果显著、适用性强等特点.

This paper proposed the frcqucncy-controlcd linear least-square deconvolution method that appropriately selects the desired dominant frequency based on the power distribution of signals and noises in raw data. Applying the method make it possible to simutancously widen the frequency band for signals and attenuate the frequency content of noises. In this way, the improvement of resolution and SNR is achievable in the same time after processing, which has been confirmed through the applied examples on both synthetic and field data given in the paper. It's concluded that the method is simple in philosophy and it takes on the feature of good suitability and yields excellent results.