基于能量守恒的再入轻诱饵鉴别方法  

Discrimination Method for Reentry Light Decoys Based on Conservation of Energy

作　　者：宗志伟[1] 饶彬[1] 张文明[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073

出　　处：《宇航学报》2011年第5期1143-1147,共5页Journal of Astronautics

基　　金：国家自然科学基金(60672033;60875019)

摘　　要：针对稀薄大气中的诱饵干扰,提出了一种基于能量守恒定律的再入轻诱饵鉴别方法。该方法利用目标单位质量机械能的损耗表征质阻比的相对大小,实现对轻诱饵的鉴别,避开了质阻比估计的收敛过程。首先根据不同目标的能量方程,推导出目标单位质量机械能损耗的解析表达式,确定了鉴别量;然后理论推导了鉴别量的方差估计式并设计了鉴别门限;最后通过仿真验证了鉴别方法的有效性。Aiming at reentry decoys in thin atmosphere,a discrimination method based on conservation of energy is presented for light decoys.To avoid the convergence process of estimation of mass-to-drag ratio,in the new method,the loss in mechanical energy of the unit mass is used of target to represent the mass-to-drag ratio to achieve the discrimination of light decoys from other targets.First,the analytic expression of discrimination statistics is derived according to energy equations of different targets.Second,the variance estimation of the discrimination statistics is derived and the discrimination threshold is designed.Finally,feasibility and validity of the proposed method is verified by experimental results.

关 键 词：诱饵鉴别 质阻比 能量守恒 稀薄大气 轻诱饵 

分 类 号：TN95[电子电信—信号与信息处理] V412.4[电子电信—信息与通信工程]