Abstract
This work proposes a low cost seismic acquisition system for seismic events detection caused by explosions, ballistic impacts and the ones generated by heavy armament, for the Brazilian Army. The proposed system was divided in three parts: seismic data acquisition, seismic wave detection and locating the epicenter of the seismic event. The acquisition of the seismic data was done using conventional geophones and microcomputers with data acquisition boards. The detection of the seismic waves was implemented by filtering in the time‐frequency domain using the S transform. The location algorithm includes the solution of a nonlinear system, whose variables are the vertical velocity of the seismic wave and the coordinates of the target, using the least squares method. The results have shown that the efficacy of the seismic event detection was fundamental for a good target locating precision.
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