多途时延估计广泛的应用于目标定位，波达方向估计等领域，因此具有十分重要的意义。
Time delay estimation was widely used in many areas such as target localization, directions of arrival (DOA) estimation.
针对此问题，采用了输差法进行泄漏的检测与报警、瞬态负压波法与稳态相关时延分析法相结合进行泄漏点的实时定位技术。
It is based on the measuring the difference between the input and autput of the pipeline and by using the combination of the WSV and the SRDA to locate the leakage.
为了提高时延估计精度，在广义相关时延估计的基础上本文又提出了基于基小波的二次加权法。
To improve the time delay estimation accuracy, this paper introduces the re-weighting method with mother wavelets based on the generalized correlation method for estimation of time delay.
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