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在目前还没有办法彻底进行信噪分离的背景下 ,提出了一种在去噪的同时把对有效波的损害减少到最小的处理方法。该方法首先采用小波分频的办法 ,使没有相干干扰的频段信号在去噪的过程中不受损失。在有相干干扰区采用分时窗的办法 ,使去噪处理仅在有干扰的区域内进行。相干干扰的拾取是利用均值加权法实现的 ,该方法识别噪音准确 ,因而具有较强的实用性。实际资料处理表明 ,这是一种既消除相干干扰又使有效波损失最小 ,且负效应极小的去噪方法。
In the absence of a complete solution to the problem of signal-to-noise separation at present, a method of reducing the damage to the effective wave while denoising is proposed. The method first adopts the method of wavelet frequency division to make the frequency band signal without coherent interference undisturbed in the denoising process. In coherent interference zone time-window approach, so that the noise removal process only in the interference area. The coherent interference is picked up by means of mean weighting method. This method can recognize the noise accurately and has strong practicability. The actual data processing shows that this is a denoising method that can eliminate the coherent interference and minimize the effective wave loss with minimal negative effects.