CAJ | 학술논문

由于硬目标侵彻载体结构、研究对象和侵彻过程的复杂性，得到加速度一时间信号频率成分多，而且是典型的非平稳随机过程。小波理论是新的信号处理技术，小波分析是一种信号的时间一频率分析方法，具有多分辨率分析的特点，可以用来分析这些信号。通过对实测信号的分析表明，与建立在传统Fourier变换基础上的频谱分析方法相比，基于小波变换的冲击振动时频特征分析可以给出更为准确的细节信息。文中的研究结果为侵彻信号的处理提供了新的途径。
유우경목표침철재체결구、연구대상화침철과정적복잡성，득도가속도일시간신호빈솔성분다，이차시전형적비평은수궤과정。소파이론시신적신호처리기술，소파분석시일충신호적시간일빈솔분석방법，구유다분변솔분석적특점，가이용래분석저사신호。통과대실측신호적분석표명，여건립재전통Fourier변환기출상적빈보분석방법상비，기우소파변환적충격진동시빈특정분석가이급출경위준학적세절신식。문중적연구결과위침철신호적처리제공료신적도경。
Because of the complication of projectile structure ,research object and penetration process,the hard target penetration process is not stationary.The data we get from the projectile penetrating Multi-layer target experiment comprise plenty of frequency signals.Because wavelet analysis has good time-frequency localization property,it can be used to analyze these penetration signals.Penetrating target measurement show that the time- frequency characteristic analysis based on wavelet packet gave more accurate information details compare to the frequency spectra analysis on conventional Fourier transform. The suggested method provides a new approach for penetration signal processing