GNSS信号的双频调制复用一体化设计研究

项目名称： GNSS信号的双频调制复用一体化设计研究

项目编号： No.61201190

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 姚铮

作者单位： 清华大学

项目金额： 25万元

中文摘要： 全球导航卫星系统的迅速发展使得卫星导航频谱资源日益紧张，而用户对信号性能的要求却在不断提升。开发双频调制与复用一体化信号是实现带宽受限条件下高性能测距的主要途径。本课题对双频调制复用一体化设计的理论与方法进行研究，包括双频调制与恒包络复用一体化信号的统一表示、联合优化、接收处理方法等。主要的思想是通过构造双频调制复用一体化信号的参数化模型及性能评估方法，建立双频调制与多路复用的联合设计框架，并提出满足频谱约束条件且具有高测距性能和高复用效率的导航信号设计新方案，以及相应的接收处理方法，以解决导航信号设计在射频兼容、测距精度、复用效率之间的矛盾。本课题的研究将建立和完善导航信号调制复用一体化设计的理论和方法，研究成果可为下一代卫星导航信号设计提供技术支撑。

中文关键词： 卫星导航；导航信号体制；信号设计；恒包络复用；信号调制

英文摘要： With the rapid development of global navigation satellite systems (GNSS), the valid satellite navigation spectrum resources are becoming more and more limited. Meanwhile, the user requirement for signal inherent performance is increasing. Developing dual-frequency modulation-multiplexing integrated signal is a key approach to realize high ranging performance with bandwidth constrained. In this project, the theories and methods of dual-frequency modulation-multiplexing integrated design are investigated, mainly involving the unified representation, joint optimization, and receiving processing of the modulation and constant envelope multiplexing integrated signals. By constructing the parametrical model of the dual-frequency modulation-multiplexing integrated signal, and presenting corresponding performance evaluation methods, this project builds the dual-frequency modulation-multiplexing joint design framework, and proposes a dual-frequency modulation-multiplexing integration scheme which has both high ranging performance and high multiplexing efficiency under the constraint of radio frequency compatibility, with the corresponding receiving methods, in order to resolve the contradiction between radio frequency compatibility, ranging accuracy, and multiplexing efficiency. The research of this project can establish

英文关键词： Satellite navigation；Navigation signal system；Signal design；Constant envelope multiplex；Signal Modulation