摘要
为了解决卫星对逆轨来袭动能拦截器的末段防御问题,提出了一种卫星轨道机动规避策略。首先建立了拦截器攻击区的概念,分析了攻击区的特性,具体推导了攻击区的估算方法。在此基础上,根据卫星机动对拦截器攻击区的影响,提出了卫星的轨道机动规避策略。最后,对所提出的攻击区估算方法和卫星轨道机动规避策略进行了仿真验证。仿真结果表明,在拦截器推进剂充足和滚动角稳定值已知的条件下,所提出的攻击区估算方法比较准确;卫星的轨道机动规避策略有效可行。所提出的规避策略对处于攻击区内不可逃逸圆外的卫星,可以保证其以最短的机动时间成功规避拦截器的攻击,对处于不可逃逸圆内的卫星,也可以保证其具有最大的成功规避概率。
To solve the problem of terminal defense of the satellite against an incoming kinetic kill vehicle in head-on interception,an orbit maneuver strategy for the satellite is proposed.First of all,the concept of pregnable area of kinetic kill vehicle（KKV） is defined,and the characteristics of the pregnable area are analyzed.A brief method is presented to evaluate KKV＇s pregnable area.Further more,on the basis of analysis of the influence of satellite＇s orbit maneuver on the KKV＇s pregnable area,an orbit maneuver strategy for the satellite is proposed.Finally,corresponding simulation experiments are carried out.The results of the experiments prove the accuracy of the presented method of evaluating KKV＇s pregnable area and the effectiveness of the proposed orbit maneuver strategy for the satellite.In a word,the following conclusion can be obtained： for the satellite out of the unescapable circle and in KKV＇s pregnable area,the proposed maneuver strategy can assure the satellite to successfully avoid direct hit by the incoming KKV;for the satellite in the unescapable circle,the proposed maneuver strategy can assure the satellite escape with the most success probability.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2011年第9期1953-1962,共10页
Journal of Astronautics
基金
国家自然科学基金(60774064)
关键词
动能拦截器
策略
估算
攻击区
逆轨拦截
轨道机动
Kinetic kill vehicle
Strategy
Evaluation
Pregnable area
Head-on interception
Orbit maneuver
