从电张量格林函数的物理意义出发 ,在频率域和时间域研究了均匀导电半空间中的电张量格林函数 ,并基于 Fredholm方程分析了三维电磁散射的数值模拟方法。作者还根据实际情况 ,首次模拟出三维瞬变电磁激电异常的相位剖面图 ,其结果与直流情况类似并与实际资料相吻合 Starting from the physical meaning of the electrical tensor Green’s function, the Green’s function of the electrical tensor in the uniform conductive half-space is studied in the frequency domain and the time domain, and the numerical simulation method of the three-dimensional electromagnetic scattering is analyzed based on the Fredholm equation. According to the actual situation, the author also simulated the phase profile of three-dimensional transient electromagnetic anomalies for the first time. The result is similar to the case of DC and is consistent with the actual data