Feasibility study on terahertz satellite-ground/inter-satellite communication system

doi:10.16708/j.cnki.1000-758X.2026.0087

Chinese Space Science and Technology ›› 2026, Vol. 46 ›› Issue (5): 173-181.doi: 10.16708/j.cnki.1000-758X.2026.0087

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Feasibility study on terahertz satellite-ground/inter-satellite communication system

SUN Bo^1,2,*，YU Xumin^1,2，CHEN Mingzhang¹，JIANG Fan¹，ZHU Zhongbo³，ZHENG Zhong^1,2

1.Institute of Telecommunication and Navigation Satellites，China Academy of Space Technology，
Beijing 100094,China
2.Innovation Center of Satellite Communication System，CNSA，Beijing 100094，China
3.China Academy of Space Technology(Xi'an)，Xi'an 710100，China

Received:2025-06-01 Revision received:2025-11-02 Accepted:2025-11-29 Online:2026-09-23 Published:2026-09-30

Abstract

Abstract: There are some advantages of terahertz communication system such as large transmission capacity, small terminal size, good transmission security and abundant frequency resources, which is irreplaceable in special cases of black barrier and solar eclipse. This paper presents a comprehensive overview of domestic and international developments in the field. The terahertz space communication system with HEO and MEO relay satellites is constructed in 220GHz.The calculation results of link budget indicate that the terahertz communication system has the feasibility of high-speed data relay between satellites and massive date transmission between satellites and ground station. Finally, the technological development trends of future terahertz satellite communication systems are discussed.

Key words: terahertz wave, terahertz communication system, space communication, inter-satellite link, data backhaul

SUN Bo, YU Xumin, CHEN Mingzhang, JIANG Fan, ZHU Zhongbo, ZHENG Zhong. Feasibility study on terahertz satellite-ground/inter-satellite communication system[J]. Chinese Space Science and Technology, 2026, 46(5): 173-181.

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https://journal26.magtechjournal.com/kjkxjs/EN/Y2026/V46/I5/173

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Feasibility study on terahertz satellite-ground/inter-satellite communication system

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