基于Viterbi算法和ROMP的多弹道目标分离与特征提取  

Multi-ballistic Target Separation and Feature Extraction Based on Viterbi and ROMP Algorithm

作　　者：陈帅 冯存前[2] 许旭光 CHEN Shuai;FENG Cun-qian;XU Xu-guang(Graduate College,Air Force Engineering University,Xi’an 710051,China;Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China)

机构地区：[1]空军工程大学研究生院,西安710051 [2]空军工程大学防空反导学院,西安710051

出　　处：《火力与指挥控制》2020年第3期22-27,共6页Fire Control & Command Control

基　　金：国家自然科学基金资助项目(61501495)。

摘　　要：为实现对中段飞行中多弹道目标进行分类和特征提取,首先利用重排Gabor分布与Viterbi算法相结合的方法,获取目标散射点的时频曲线,对目标信号时频曲线拟合后进行频谱分析,完成目标运动类型分类。根据目标微动类型确定对应散射点的回波信号形式并构造相应的匹配原子库,设定待估计参数,利用ROMP方法对参数进行提取。仿真实验表明,该方法有效实现散射点分离并判断出目标的微动类型,同时验证了该方法对目标参数的提取精度。In order to realize the classification and feature extraction of multi ballistic targets in its middle flight,this paper uses the method of rearranging Gabor distribution and Viterbi algorithm to obtain the time frequency curve of the targets’scattering points.After the target signal time frequency curve is fitted,spectrum analysis is carried out to complete the classification of target motion types.According to the target fretting type,the echo form of the scattering points is determined and the matching atomic libraries are constructed.Setting the parameters to be estimated,using the ROMP method to extract the parameters.Simulation results show that the method effectively realizes scattering point separation and determines the fretting type of the target and verify the extraction accuracy of the target parameters.

关 键 词：多弹道目标 重排Gabor变换 VITERBI算法 稀疏分解 特征提取 

分 类 号：TN957[电子电信—信号与信息处理] TJ013[电子电信—信息与通信工程]