Technology of Satellite-Ground Combined Video Transmission Based on Quantum Key Distribution
Yin Liu, Longchuan Yan, Zhiyu Chen, Dequan Gao, Rui Zhi Shi, Yaofu Cao, Limin Li · 2018
The traditional key generation distribution system will not meet the demands of the power industry for extremely high security levels. The quantum key distribution system has been constructed in China power industry, but its range of service is limited now. To extend the range of the service, a satellite and ground combined technology for video transmission is proposed in this paper. Based on the existing communication resources of the power industry, the quantum key distribution technology is used in this satellite and ground combined video transmission services. The high security level protection of video transmission via quantum key is realized. Quantum signal rapid rectifying technique and quantum relay technology are used to overcome many technical difficulties such as multi-relay node and hybrid network of buried optical cable and overhead optical cable. It has achieved a significance progress in the application of quantum key distribution technology in the power industry.