Small Portable Ground Motion Target Detection And Recognition System

The thesis mainly discussed the realization with software and hardware of the seismic signals detecting and target identifying microsystem. The hardware mainly consists of three parts: signal pre-amplifying and conditioning circuit is used to amplifying the microseismic signals which have detected, signal processing and target identifying circuit based on singlechip is used to convert the analog signals which have been amplified to digital signals and go through signal analysis, processing to identify the moving target, the sending and receiving setting is used to send the identifying result to the decision-making and he can take relevant action according to the result. As to the software, It realized feature extraction and target identification from the seismic signals of representative moving targets using the zero-crossing method in time domain.The microsystem is small and light, which can receive the identifying result in 100 meters, and can be used widely. It can be used in many kinds of situation to distinguish the targets, and have the ability of prewarning.