空基通信与导航定位融合设计方法研究

This project studies the joint design of space communication and navigation technologies based on the spatial information networks comprised of space platforms such as satellites, space stations, aircrafts, etc. On the basis of the principle theory of space communication and navigation positioning, the project combined with the properties such as spatial information network under high dynamic motion, large transmission delay and sparse distribution. We aim at improving the efficiency and reliability of spatial information network, enhancing the accuracy and real-time performance of navigation positioning, and optimizing the system resource efficiency. The research will establish the theoretical model of integration of space communication network and navigation positioning. We put forward the methods of integration and mutual assisted at all levels such as waveform of communication and navigation positioning, signal processing of synchronization, application, etc, and will analyze the theoretical performances of the methods. Summarily speaking, the detailed research content based on problems above is as follows: the theoretical model and system architecture of space communication and navigation positioning; the integration of waveform for space communication and navigation positioning; the joint signal processing methods of space communication and navigation positioning; the joint cross-layer networking protocol optimization of space communication and navigation positioning; the multi-node cooperative joint positioning method of space communication and navigation. The joint design of space communication and navigation positioning technologies can not only greatly improve the transmission performance and positioning performance, networking efficiency and spectrum efficiency, but also decrease the complexity of the communication system and the navigation system effectively. It is one of the key technologies and main optimizing directions in the research of spatial information networks. Above all, this project has great theoretical significance and engineering value and is valuable to be studied.

课题针对卫星-空间站-飞机等平台组成的空间信息网络，研究空基通信和导航定位融合设计技术。以提升空间信息网络通信效率、可靠性和导航定位的精度、实时性，并降低资源占用为目标，在空基通信导航基本理论基础上，结合空间信息网络高动态、大传输延迟、分布稀疏等特性，研究空基通信组网与导航定位融合理论模型，研究通信与导航定位波形设计、信号处理、应用等各层次融合和相互辅助方法，分析其理论性能。研究内容包括：空基通信、导航定位融合模型；空基通信与导航定位波形融合设计；空基通信与导航定位融合信号处理方法；空基通信与导航定位融合的跨层组网优化；空基通信与导航定位融合的多节点协作定位方法等。空基通信与导航定位融合设计不仅可以显著提升空间信息网络的传输和定位性能、组网和频谱效率，还可有效降低通信与导航系统各自的复杂度，是空间信息网络研究的关键技术和重点优化方向之一。因此，本课题研究具有良好的理论意义和工程价值

课题针对空间信息网络，研究空基通信和导航定位融合设计技术。以提升空间信息网络通信效率、可靠性和导航定位的精度、实时性，并降低资源占用为目标，结合空基节点网络高动态、大传输延迟、分布稀疏等特性，研究空基通信组网与导航定位融合理论模型，研究通信与导航定位波形设计、信号处理、应用等各层次融合和相互辅助方法，并分析其理论性能。经过3年研究，课题完成工作包括：1、空基通信与导航定位系统模型设计分析，提出了适用于空基通信与导航定位融合的网络结构和融合层次，2、空基通信与导航定位融合波形及信号处理方法设计，提出了基于多种类序列时频域融合的导频结构和融合信号处理算法，3、空基多节点协作定位方法研究，提出了适用于稀疏高动态节点的协作定位算法及其性能限，4、空基通信与导航定位融合组网优化方法，提出了基于位置信息的路由策略和资源优化分配。在理论和算法研究的基础上，结合无人机通信组网与测控应用，设计开发了L频段空基通信与导航融合信号处理样机与系统，搭建了一套多点通信组网与测控定位演示验证系统、并完成测试工作。仿真分析和实验验证结果表明，通过通信与导航定位融合设计，可以有效提升空间信息网络的传输效率、定位性能和网络可靠性。.课题进展和成果与相关重点项目和集成验证项目承担单位开展了初步交流合作。