Penetration Data Processing Based on Pseudo Autocorrelation

During the penetration data processing,when the filtering frequency is fixed,the hardness,thickness of dielectric layer of penetration media and the filter frequency will affect the processed waveform,which can not reflect the real penetration acceleration change.In view of this situation,a penetration data processing method based on the pseudo autocorrelation was put forward in this paper.In this method,the linear FM pulse was compressed by involution,then the smooth penetration signal envelope was extracted by low pass filtering.The simulation result showed that the signal envelope curve gotten by the method was smoother and more realistic,which could enhance the differences among the deceleration values and the received waveform could reflect the penetration overload condition well,the peak number was the penetration dielectric layers number.