基于载波时频双域紧密重叠与混沌的海上安全高速通信关键技术研究

本项目响应我国“海上强国”重大战略对于海上信息安全之需求，着眼海上信息安全发展所面临之瓶颈，针对海上信息安全高速传输方法以及目前尚不成熟的关键技术展开研究。具体内容包括：(1) 基于载波时频双域紧密重叠的海上高速调制解调技术研究；(2) 基于多载波紧密重叠的高频谱效率差分混沌键控技术研究；(3) 基于载波紧密重叠与混沌交叉融合的通信保密增强机制探索；(4) 基于软件无线电的海上信息安全高速传输实验及演示平台构建。本项目的研究成果，将为充分挖掘海上频谱资源，进一步提升海上通信速率提供新的理论与技术；为混沌保密通信在海上场景中的应用提供新的思路与方法；为突破海上信息安全所面临的通信速率与保密机制两大瓶颈提供强有力的支撑。此外，本项目对于加快新型数字调制技术与混沌保密通信技术的实用化进程，从底层调制技术层面进一步提升无线通信技术的安全性与频谱利用率等指标均具有重要意义与实用价值，应用前景广阔。

This project responds to the demand of the maritime information security in the strategy of “the strong naval power country”, aims at the bottleneck of the development of the maritime information security, and focuses the research on the method of secure and high-speed maritime information transmission and the current immature critical technologies. The research is detailed as follows. Firstly, the maritime high-speed modulation and demodulation technology based on the carrier time-frequency dual-domain tightly overlapping method is studied. Secondly, the high spectral-efficiency chaos-based communication technique based on the carrier tightly overlapping method is studied. Thirdly, the secure enhancement mechanism of maritime communication based on the cross integration of chaos and carrier time-frequency dual-domain tightly overlapping method is deliberated. Last but not the least, the experimental and demonstration platform of the secure and high-speed maritime information transmission based on the software-defined radio will be constructed. The results of this project will not only provide new theories and technologies to fully utilizing spectrum recourses in order to further increase the maritime information transmission rate, but also provide new ideas and methods to practical deployments of chaotic secure communication in maritime domain. In this way, this project will provide a strong support to the breakthrough the two important bottlenecks of the maritime communication, i.e. the maritime data transmission rate and maritime information security mechanism. In addition, this project has significant meanings and practical values on boosting the practical process of the new digital modulation technology and the chaos-based secure communication technology as well as improving the security, data transmission rate and spectral efficiency of the modern wireless communication technologies from the aspect of fundamental modulation technology, and has broad application prospects.