瞬变电磁测深中数据处理偏差及修正方法

摘要

The transient electromagnetic sounding method is often processed with the step wave model by using square pulse wave activate source. This operation will result in obvious deviation in theory. The authors suggested using single pulse (function) active source electromagnetic sounding method for processing data and explaining the square pulse active source. Practice shows that this means is feasible.%瞬变电磁测深方法中通常采用阶跃波激励方式的模型进行处理.在实际应用中,为了便于重复观测,一般采用方波形式进行激励,采用阶跃波模型进行数据处理和解释；这种处理方式理论上存在比较大的偏差.为了修正这种偏差,通过理论计算,建议采用单脉冲电磁测深方法来处理方波激励源的电磁测深结果.实例分析表明,该方法是可行的.