瞬变电磁数据预处理方法探讨

DISCUSSION ON TEM DATA PREPROCESSING METHOD

在瞬变电磁勘查中,由于噪声干扰、有用信号相对其它背景信号太弱、残存一次场等因素,大大影响勘查效果,为取得良好的勘测效果,对数据进行有效的预处理至关重要。在此,就数据组合滤波、弱信息增强处理、异常分离等数据预处理方法进行了探讨,并较好地解决了上述问题,取得良好的应用效果。

As there is some bad effect in TEM explore, such as the noise,weak signal, primary field. For better survey effect,it is of utmost importance to data preprocessing. Now we go into these data preprocessing problems-data composite filter, and the enhanced process for weak information, and anomaly separation. Some case history result appeared.