利用一维距离像序列估计弹道中段目标进动参数  

Using HRRP sequence to Estimate the Precession Parameters of Midcourse Target

作　　者：贺思三[1] 周剑雄[1] 付强[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院ATR实验室,长沙410073

出　　处：《信号处理》2009年第6期925-929,共5页Journal of Signal Processing

摘　　要：进动是自旋弹头固有特性,进动参数是中段真假弹头识别的重要特征量,已发表的文献多利用进动目标的RCS序列估计进动参数。本文通过对平底锥弹头散射特性及其进动模型的分析,指出进动将造成一维距离像序列上散射中心位置的周期性走动。在此基础上,提出了一种利用进动目标上两个强散射中心在一维距离像序列上的位置差来估计进动参数的方法,并给出了应用该方法的具体步骤。仿真结果验证了所提方法的正确性和有效性。Precession is the inherent character for spinning warheads. Precession parameters are very important features for war- head and decoys discrimination, already published literatures mostly use the radar cross section （RCS） sequence to estimate them. After analyzing the scattering character of blunt cone warheads and/he model of precession, this paper points out that the precession cause vibration of scattering centers＇ position in high range resolution profile （HRRP） sequence. Based on this,a method utilizing the vibration of two strong scattering centers＇ projection distance on HRRP is proposed to estimate the precession parameters. The steps for how to use this method to estimate precession parameters are listed. Simulation results show that the presented method is effective and applicable.

关 键 词：目标识别 弹道导弹 进动 一维距离像序列 参数估计 

分 类 号：TN953[电子电信—信号与信息处理]