星下点时空体概念及其应用构想  

Concept of Subastral⁃Point Space⁃Time Body and Its Application Idea

作　　者：李奇 秦大国 李玖阳 吴戌 LI Qi;QIN Daguo;LI Jiuyang;WU Xu(School of Space Command,Space Engineering University,Beijing 101416,China;Unit 63611 of PLA,Korla 841001,Xinjiang,China;Unit 63723 of PLA,Xinzhou 036303,Shanxi,China)

机构地区：[1]航天工程大学航天指挥学院,北京101416 [2]解放军63611部队,新疆库尔勒841001 [3]解放军63723部队,山西忻州036303

出　　处：《指挥信息系统与技术》2021年第6期45-51,共7页Command Information System and Technology

基　　金：全军军事类研究生重点课题(JY2019B154)资助项目。

摘　　要：针对传统反航天侦察预报在模式和内容上的不足,基于时间地理学原理提出了星下点时空体的概念。首先,在时空坐标系中用星下点的时空路径表明其随时间的变化,并结合侦察范围对卫星侦察涉及的时空范围进行更细致的描述;然后,将卫星的侦察过程视为时空体的相遇,通过时空棱柱描述星下点时空体的可达范围,并进一步结合概率时间地理学分析了覆盖概率和识别概率;最后,基于星下点时空体提出了反航天侦察时空路径规划的应用构想,可为提升反航天侦察情报的军事效益提供参考。Aimed at the deficiency on the mode and the content of the traditional anti-space reconnaissance prediction,and based on the principle of time geography,the concept of the subastral-point space-time body is proposed.Firstly,in the space-time coordinate system,the change of the subastral points over time is expressed with their space-time path.Combined with the reconnaissance range,the space-time range involved in the satellite reconnaissance is described in more details.Then,the satellite reconnaissance process is regarded as the encounter of the space-time bodies,and the reachable range of the subastral-point space-time bodies is described with the space-time prisms.Combined with probabilistic time geography,the coverage probability and recognition probability are further analyzed.Finally,based on the subastral-point space-time bodies,an application idea of the space-time path planning on the anti-space reconnaissance is presented.It can provide reference for improving the military benefit of the anti-space reconnaissance intelligence.

关 键 词：时间地理学 星下点 航天侦察 时空路径 时空棱柱 

分 类 号：P208[天文地球—地图制图学与地理信息工程]