And the negative pressure wave signals are multi-resolution analyzed to obtain its low-frequency profile and high-frequency details.
利用小波变换的快速算法(Mallat算法)对泄漏负压波信号进行了多分辨率分析，同时得到了其低频概貌和高频细节。
参考来源 - 输油管道泄漏实时监测报警系统的研究与开发By combining the transient change model method and rarefaction wave method, the multidimensional rules to detect the leakage and locate the leak point were set up.
并结合管道瞬变模型法与负压波法建立多维判别法则，解决输油管道泄漏检测及漏点定位的问题。
参考来源 - 输油管道泄漏在线检测的研究On the basis of suction wave method to detect pipeline leakage, the theses present that Kalman Filter can be used to get the featured inflection point of pressure wave.
本文基于负压波法检测管道泄漏的基本原理,提出了利用卡尔曼滤波算法对压力信号波形进行处理获得压力波形特征点的方法。
参考来源 - 卡尔曼滤波和序贯概率比检验在管道泄漏监测中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
采用负压波法检测管线泄漏信号。
The negative pressure wave method was proposed for a pipeline leak detection system.
压力曲线上的负压波是管道泄漏的征兆。
Negative pressure waves (NPWs) in pressure measurements can be an indication of pipeline leakage.
因此稳定地提取了负压波的拐点，提高了定位的准确性。
Therefore, the said inflexions are stably captured so as to improve the location accuracy.
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