Abstract
In this paper, the conventional finite difference time domain (FDTD) technique is augmented by (a) extrapolation in the time domain and (b) scaling in the frequency domain, which together give reasonably accurate distribution of the scattered field from resistive sheets in layers of earth excited by a low-frequency (of the order of kHz) electric or magnetic dipole source. The field distribution is useful in the imaging of petroleum reservoirs in layers of earth.