面向空间信息网络的隐蔽通信技术综述  

A review of covert communication technologies for space information networks

作　　者：王超 安建平[2] 邢成文[3] 赵楠[1] Chao WANG;Jianping AN;Chengwen XING;Nan ZHAO(School of Information and Communication Engineering,Dalian University of Technology,Dalian 116024,China;School of Cyberspace Science and Technology,Beijing Institute of Technology,Beijing 100081,China;School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]大连理工大学信息与通信工程学院,大连116024 [2]北京理工大学网络空间安全学院,北京100081 [3]北京理工大学信息与电子学院,北京100081

出　　处：《中国科学：信息科学》2024年第6期1319-1349,共31页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:U23A20271,62271099)资助项目。

摘　　要：空间信息网络是由部署在不同轨道、执行不同任务的航天器、航空器,以及地面通信设施构成的空天地一体化网络,具有超大规模、多层拓扑结构、开放的通信环境、支持多种业务等特点,通过卫星节点、空中节点和地面节点之间的组网与互联,实现无缝隙的高效全球通信.另一方面,空间信息网处于高度开放的状态,缺少了物理隔离,这在方便信息传播的同时,也容易导致信息的泄露.因此,空间信息网络面临着巨大的安全挑战.隐蔽通信是一种重要的安全传输技术,当发送端向接收端发送信息时,能够保证非法窃听者检测到该传输的概率足够小,从而隐藏发送端的传输行为.利用隐蔽通信技术可以保障空间信息网络传输的可靠性与安全性.本文对空间信息网络的隐蔽通信进行综述,从背景介绍、关键技术、应用场景和未来挑战等几个方面介绍空间信息网络中隐蔽通信的研究工作与最新进展.Space information network(SIN)is a space-air-ground-integrated network,which consists of spacecraft,aircraft and ground communication facilities deployed in different orbits and performing different missions.The SIN has several characteristics such as extremely large scale,multi-layer topology,open communication environment and supporting various services.Through networking and connection between satellites,aerial nodes and terrestrial nodes,it can achieve seamless global communications efficiently.On the other hand,the SIN is open to the wireless environment without physical isolation.Although this can benefit information dissemination,the information is also easy to be leaked.Therefore,the SIN is facing great security challenges.Covert communication is an important technology for secure transmission.When the information is transmitted to the receiver,it can guarantee that the detection probability of the illegal warden is small enough,and thus the transmission can be hidden.Through using covert communication technology,the transmission reliability and security for SIN can be preserved.In this paper,the covert communications of SIN are surveyed.Specifically,the research works and recent progress of covert communications in SIN are introduced from the aspects of background introduction,key techniques,application scenarios and future challenges.

关 键 词：空间信息网络 隐蔽通信 天基网 空基网 地基网 

分 类 号：V443.1[航空宇航科学与技术—飞行器设计] TN918[电子电信—通信与信息系统]