For the convenience of time -domain convolution, the vector fitting method is adopted to approach the characteristic impedance and delay function in complex frequency-domain.

为了便于时域卷积，对不同模量上的特征阻抗和延时函数在复频域采用矢量匹配法进行拟合。

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Convolution is a key technique in signal and system analysis, which plays an important role in LTI time and frequency domain analysis.

卷积技术是信号与系统分析的核心技术。它在LTI时域和频域系统分析中起着重要作用。

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To reduce the large amount of computation in the time domain analysis of SSI problem, an effective algorithm of calculating the convolution integrals was presented.

土—结相互作用的时域分析计算量很大，为减小计算量，提出了计算褶积分的有效方法。

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