| The simulation technology of the Seismic signals which by a target of military interest moving on the ground is mainly discussed in the article. In allusion to three types of representative moving targets, we realize the wave recurrence of vibration test instrument in the laboratory. It consists of three parts, which are serial communication software on PC, the drive circuit of vibration test instrument, the data acquisition system based on vibration instrument.In this article, the Seismic signals and the random vibration processes of vibration instrument, has been analyzed firstly. On the base of this theory, we deduce that the vibration test instrument recur Seismic signals exactly in the laboratory, which need they have a similar statistical characteristic of random vibration. Secondly, we introduce serial communication and program serial communication software. Base on the software, we design receive and digital to analogy circuit which drive vibration instrument, and analyze the structure and principle of power amplifier and vibration instrument in detail. Finally, we design data acquisition system based on vibration instrument, which realize data acquisition and transfers, and target identification based on zero-crossing arithmetic. |
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