GPS现代化L1C民用信号体制分析  

Analysis of GPS modernization L1C civil signal regime

作　　者：王轲 张健铤 商晓燕 吴振伟 王志涛 WANG Ke;ZHANG Jianting;SHANG Xiaoyan;WU Zhenwei;WANG Zhitao(Beijing Satellite Navigation Center,Beijing 100094,China)

机构地区：[1]北京卫星导航中心,北京100094

出　　处：《通信与信息技术》2024年第4期97-101,共5页Communication & Information Technology

摘　　要：为了保持国际竞争力的同时满足全球范围内不断增长的PNT服务需求,美国不断进行现代化全球定位系统(GPS)的升级改造,2020年启用并播发新的民用信号L1C就是重点改造内容之一。针对新形势下日趋激烈的频谱资源竞争环境,在对GPS四个民用信号基本特征梳理归纳的基础上,阐述了L1C频点信号的选择背景及意义,分析了该信号的基本结构,重点研究了L1C信号的具体调制方式及重要特征,最后对伪码进行了详细分析,通过研究深入剖析L1C信号体制,对其他GNSS未来新体制信号的设计及工程实现有借鉴和参考价值。In order to maintain international competitiveness while meeting the growing demand for PNT services on a global scale,the United States continues to upgrade and transform its modern Global Positioning System(GPS).One of the key improvements is to launch and broadcast a new civilian signal L1C in 2020.In response to the increasingly fierce competition for spectrum resources in the new situation,based on the basic characteristics of the four civilian GPS signals,this paper elaborates on the background and sig⁃nificance of selecting L1C frequency point signals,analyzes the basic structure of the signal,focuses on the specific modulation meth⁃ods and important features of L1C signals,and finally conducts a detailed analysis of pseudocodes.Through in-depth analysis of the L1C signal system,it has reference value for the design and engineering implementation of other GNSS future new system signals.

关 键 词：卫星导航 GPS现代化 L1C民用信号 信号体制 

分 类 号：TN967.1[电子电信—信号与信息处理]