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针对卫星导航当前面临导航信号测量性能提高、应用环境更加苛刻、导航频段频谱资源紧张等需求,合理的信号体制和各类标准的相辅相成是卫星导航系统持续稳定运行的重要保障。该文在梳理和分析国内外公开的卫星导航信号体制的基础上,研究了卫星导航信号的载波频率、调制方式、信道编码、导航电文等关键组成要素,简要剖析了各组成要素对系统兼容性、互操作性、码跟踪捕获性能、抗干扰性、抗多径及用户终端成本等方面的影响,开展了卫星导航信号设计的需求分析,设计提出了一种卫星导航信号设计标准体系。
As satellite navigation is currently facing the demand of navigation signal measurement performance more rigorous application environment and navigation band spectrum resource shortage, reasonable signal system and various standards complement each other is an important guarantee for continuous and stable operation of satellite navigation system. On the basis of combing and analyzing public satellite navigation signal system at home and abroad, the key components of satellite navigation signal carrier frequency, modulation method, channel coding and navigation message are studied. The factors of system compatibility , Interoperability, code tracking acquisition performance, anti-jamming, anti-multipath and user terminal costs and other aspects of the satellite navigation signal to carry out the needs of the design analysis and design of a satellite navigation signal design standard system.