侵彻靶板过程中刚体过载特征提取方法  

Study on Rigid Body Overload Feature Extraction Method in Penetrating Target Process

作　　者：郝慧艳[1,2] 李晓峰[1] 刘明杰[1] 

机构地区：[1]北京理工大学机电工程学院,北京100081 [2]中北大学信息与通信工程学院,太原030051

出　　处：《火力与指挥控制》2012年第12期42-44,47,共4页Fire Control & Command Control

基　　金：国家自然科学基金资助项目(61171177)

摘　　要：针对引信动态环境非常复杂各种振动非常丰富,侵彻加速度信号含有许多瞬变成分,是非平稳时变信号,采用局部均值分解算法自适应的对侵彻加速度信号进行分解,从而提取加速度信号刚体过载特征和加速度信号频率分布特性,有效准确地对信号机理进行分析。为了使得侵彻特征更加明显,利用半正弦波形作为匹配波形,采用匹配相关算法得到侵彻过程层穿越的特征信号,更有效实时地进行层识别或者空穴识别。Fuse dynamic environment is very complex and rich in a variety of vibration.The Penetration acceleration signal is non-stationary time-varying signal which contains many transient components.In this paper,penetration acceleration signal is decomposed using the Local Mean Decomposition algorithm adaptively,which can extract the acceleration signal Rigid overload characteristics and acceleration signal frequency distribution characteristics.This method is effective and accurate to analyze signal mechanism.In order to make more apparent penetration characteristics,this paper uses matching algorithm get the characteristic signal of across layer in the penetration process,Half-sine shaped as a matching waveform.The algorithm can more effectively real-time identificated layers or hole recognition.

关 键 词：侵彻 刚体过载 局部均值分解 匹配相关 

分 类 号：TN911.6[电子电信—通信与信息系统]