不同信噪比和混响条件下的互相关法声信号检测实验
Acoustic signal detection through the cross-correlation method in experiments with different signal to noise ratio and reverberation conditions
摘要：
介绍了噪声和混响环境下基于互相关法的瞬态声信号检测技术的研究和应用。这些技术被示出为提供高的信噪比、从非常接近的回波中的良好的信号辨别以及信号到达时间的准确检测。所提出的方法已经过测试的环境和条件下收集的实际数据，它的好处可以显示。这项工作的重点是应用于水下结构定位和校准任务的声学探测，如ANTARES和KM 3 NeT深海中微子望远镜，以及通过COUPP/PICO探测器的声学事件进行粒子探测。此外，已经开发和测试了一种通过使用互相关获得信号在时间（电压）上的真实幅度的方法，并在这项工作中进行了描述。
英文摘要：
The study and application of signal detection techniques based on cross-correlation method for acoustic transient signals in noisy and reverberant environments are presented. These techniques are shown to provide high signal to noise ratio, good signal discernment from very close echoes and accurate detection of signal arrival time. The proposed methodology has been tested on real data collected in environments and conditions where its benefits can be shown. This work focuses on the acoustic detection applied to tasks of positioning in underwater structures and calibration such those as ANTARES and KM3NeT deep-sea neutrino telescopes, as well as, in particle detection through acoustic events for the COUPP/PICO detectors. Moreover, a method for obtaining the real amplitude of the signal in time (voltage) by using cross correlation has been developed and tested and is described in this work.
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