摘要
弹道导弹的空间微动特性是中段空间弹道目标识别的重要依据之一。以一维距离像序列为研究对象,首先利用距离像散射中心位置加权、纵向积累估计空间锥体进动目标的进动周期,然后基于广义Radon变换提取空间锥体目标散射中心位置变化曲线,并根据获得的曲线参数估计得到空间进动角,最后给出了基于广义Radon变换的散射中心位置估计新方法。仿真实验验证了所提算法的有效性。
Spatial micro-motion feature is a key basis for mid-course ballistic target recognition. HRRP （high resolution range profile） sequence of the cone-shaped is studied in this paper. Firstly the target＇s precession period is estimated through weighting the scatters＇ location from HRRP and accumulation along range. Then the scatters＇ location changing curves are extracted by GRT （Gneralized radon transform） and the cone-shaped spatial target＇ s precession angle is obtained according to the curve＇ s parameters. Finally, a new method is presented for estimating the scatters＇ location based on GRT. Simulation result shows the validity of above algorithms.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第3期1133-1140,共8页
Journal of Astronautics
基金
国防预研项目(413030401)
关键词
空间弹道目标
微动特征
广义Radon变换
一维距离像
Spatial ballistic target
Micro-motion feature
Gneralized radon transform
High resolution range profile
