Acquisition and Analysis of Target Acoustic and Seismic Signals for Networked Ammunition

摘要

Based on the introduction of the acoustic and seismic detection technology for the networked ammunitions, a data acquisition system with an input of eight channels for the acoustic and seismic signals is designed for the distributed acoustic and seismic sensor arrays. Programs are made for the spectrum analysis, design of the filter, time delay estimation of the multichannel signals. The acquisition of acoustic and seismic signals of the moving target is carried out in the field. Several sets of experiment data are obtained, and one set of acoustic signal and seismic signal are analyzed in this paper. The spectrum of the signal is analyzed and a filter is designed according to the spectrum. The signals are filtered and cross-correlation is made for the acquired multichannel signals. Then the time delay of the multichannel signals is obtained. At last, the cross-correlation result and the time delay estimation result are analyzed in this paper.