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在地磁数据处理中,张量阻抗的估算通常是在频域里使用非参数谱分析方法进行的.该文使用有理函数模型表示张量阻抗,利用自适应参数时域逼近方法进行重构.这种方法可以直接使用观察到的MT数据,而无需进行频域转换,因而容许在线实时应用.模拟结果表明,利用此法重构的冲激响应函数与实际的相比较,符合性很好.“,”Magnetotelluric data processing for the estimation of the impedance tensor is usually realized in the frequency--domain employing nonparametric methods of spectral analysis. In this paper, the impedance tensor is represented by a ratioal--form model and is reconstructed using an adaptive parametric time--domain approach, whereby the observed data can be used directly n this process without the need for a frequency--domain transsormation. This adaptation algorithm allows on--he real--time application. The example illustrated these esti- mated impulse responses compare very well with the actual impulse responses.