Parameters of Exterior Ballistic Feature Points Extraction in Radar Measurement Data by EMD  

作　　者：Wanjun Zhang Kailin Wang Xiaoying Wu Guohui Li Hongtian Liu 

机构地区：[1]Department of Arms Engineering,Academy of Army Armored Forces

出　　处：《Journal of Beijing Institute of Technology》2018年第4期503-509,共7页北京理工大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(61174219,51677192)

摘　　要：The problem of measuring exterior ballistic feature points is always difficult to solve and it is essentiale on exterior ballistic measurement.By analysis of radar reflection characteristics and non-stationary echo signals of exterior ballistic feature points,the echo data of exterior ballistic feature points is measured by using the continuous wave radar.The parameters of feature points are extracted by the empirical mode decomposition method(EMD)of Hilbert-Huang transform(HHT)spectrum analysis technique.The radar echo signal model and EMD extraction model are established to analyze the exterior ballistic mutation point detection and EMD extraction method of aliasing echo signal.Typical feature point parameters of exterior ballistic in rocket flight tests are carried out and the effectiveness of the method is verified.A new method of measuring the parameters of exterior ballistic feature point is therefore presented.The problem of measuring exterior ballistic feature points is always difficult to solve and it is essentiale on exterior ballistic measurement.By analysis of radar reflection characteristics and non-stationary echo signals of exterior ballistic feature points,the echo data of exterior ballistic feature points is measured by using the continuous wave radar.The parameters of feature points are extracted by the empirical mode decomposition method(EMD)of Hilbert-Huang transform(HHT)spectrum analysis technique.The radar echo signal model and EMD extraction model are established to analyze the exterior ballistic mutation point detection and EMD extraction method of aliasing echo signal.Typical feature point parameters of exterior ballistic in rocket flight tests are carried out and the effectiveness of the method is verified.A new method of measuring the parameters of exterior ballistic feature point is therefore presented.

关 键 词：exterior ballistic characteristic points empirical mode decomposition method(EMD) continuous wave radar information extraction 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]