A Method for Detecting Dumbbell Landing Sound Waves

During live fire shooting, there is often the generation of UXO, which can cause potential safety issues. In the acoustic localization of dumbbell landing based on TDOA technology, the detection of the sound source is a key step in completing the localization, and the accuracy of the localization results is crucial. Based on the mixed basis decomposition of characteristic waveforms, this article studies a specific wavelet and other characteristics, and constructs a wavelet characteristic waveform basis function library that can be used for ground acoustic signal detection and time delay estimation. The effectiveness of this method was verified by detecting and locating weak sound sources when projectiles land under noisy background conditions.