基于过零数衰减的震动探测预警分析方法

Vibration Detection Warning Analysis Based on Zero-Pass Attenuation

针对目标不同距离处预警率难以量化的问题,提出了基于过零数衰减的地震动传感器探测预警分析方法。该方法在地震波传播规律和过零数求解的分析基础上,给出了过零数指数衰减模型,可求解任意目标距离时的过零数,结合预警分析能得到单传感器对目标一定距离上的量化预警情况。实验及仿真计算结果表明:该方法正确反映了预警率随目标距离的变化关系,且量化结果与实测数据预警分析结果相吻合。

Aiming at the problem that it was difficult to quantitatively analysis the warning rate of a target at different distances, this paper proposed an early warning analysis method based on zero-pass attenuation from detection by seismic sensor. Based on the analysis of both seismic wave propagation and the zero-pass computing, an exponential attenuation model was put forward, which could solve zero-pass numbers of seismic signal from target at any distance. Combined with warning analysis, target^s warning situation：detected by one seismic sensor was further carried out at some certain distances. The results of experiment and simulation computing showed that this method correctly reflected the relationship between warning rate and targegs distance, and the warning rate from the model was in good agreement with that from measured data.