Abstract An original method for time delay estimation is presented. It is based on changing input signals into cumulative ones, followed by determination of inflection points of cumulative curves, and estimation of time delay as time difference of these points’ occurrences. To determine the inflection points, a suitable algorithm is proposed. The preliminary results show that the proposed method is sufficiently efficient, especially in the case of flow measurements based on tomography technique when the cross-correlation function of the signals has no evident peak. This method has no limitations on its application for different types of input signals.

中文翻译：

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一种基于累积信号的时延估计方法

摘要 提出了一种原始的时延估计方法。它基于将输入信号转换为累积信号，然后确定累积曲线的拐点，并将时间延迟估计为这些点出现的时间差。为了确定拐点，提出了合适的算法。初步结果表明，所提出的方法是足够有效的，特别是在基于断层扫描技术的流量测量的情况下，当信号的互相关函数没有明显的峰值时。这种方法对于不同类型的输入信号的应用没有限制。