Galileo E6B/C信号接收机设计  

The design of Galileo E6B/C receiver

作　　者：何旭蕾 刘成 王威 李健[1] 刘学勇[1] 杨颖[1] 巴晓辉[1,2] 陈杰 He Xulei;Liu Cheng;Wang Wei;Li Jian;Liu Xueyong;Yang Ying;Ba Xiaohui;Chen Jie(Institute of Microelectronics of Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;China Satellite Navigation Office,Beijing 100094,China)

机构地区：[1]中国科学院微电子研究所,北京100029 [2]中国科学院大学,北京100049 [3]中国卫星导航工程中心,北京100094

出　　处：《电子技术应用》2020年第11期8-11,17,共5页Application of Electronic Technique

基　　金：国家自然科学基金(61601009)。

摘　　要：Galileo系统通过E6B/C信号提供精密单点定位服务和身份验证服务。2019年1月欧盟公布了Galileo系统E6B/C信号的扩频码,参考欧盟发布文件,对E6B/C信号的载波频率、调制方式、主码、二级码、数据编码方案和电文结构进行了描述。设计了E6B/C信号捕获跟踪方案,通过短时相关结合FFT的方案对天空中的Galileo卫星E6B/C信号进行捕获,并用窄带宽带功率比方法和矩方法估计E6C和E6B的载噪比。同时对当前卫星播发的E6B电文信息进行了分析,分析结果表明当前Galileo的E6B信号还未开始提供PPP服务。Galileo system provides commercial services including precise point positioning and authentication through E6B/C signals.In January 2019,the European Union announced the spreading code of the Galileo system′s E6B/C signal.This article refers to the European Union′s published document of the E6B/C signal and describes the carrier frequency,modulation scheme,primary codes,secondary codes,data coding scheme,and message structure.This article introduces the scheme of acquisition and tracking of the E6B/C signal,which acquires the E6B/C signals in the sky through the short-time correlation and FFT scheme,then uses the narrowband-wideband power ratio method and moments method to estimate the CNR of E6C and E6B.At the same time,this paper analyzes the current E6B message information that transmitted by current satellites.It shows that Galileo′s E6B signal has not yet started to provide PPP services.

关 键 词：E6B/C 接收机设计 短时相关结合FFT 载噪比估计 

分 类 号：TN911.6[电子电信—通信与信息系统] P228.4[电子电信—信息与通信工程]