【摘要】 在实测电磁测深曲线处理中,需要进行平滑以消除噪声的影响,这就会存在平滑不足或平滑过度的问题,那么,怎样选择一个合适的扩散时间尺度就显得尤为重要。这里通过各向异性扩散过程中信号与噪声能量的变化,利用扩散平衡来确定平滑的时间尺度。通过模拟及实测数据测试显示,该方法能在噪声压制与信号特征保护和形态恢复上,达到一个合理的平衡。更多还原

【Abstract】 Electromagnetic sounding curve need to be smoothed for removing the noise in the pre-processing,the curve may be under-smoothed or over-smoothed.So it is important how to select a proper smoothing scale.In this paper,we determine the smoothing scale by diffusion balance with analyzing the signal and the noise energy variation in anisotropic diffusion smoothing processing.The synthetic and field data tests show that a balance can be reached between noise suppression and curve feature preservation and restoration by the new smoothing and time scale estimation method.更多还原