北斗卫星导航系统空间信号接口控制文件公开服务信号（2.0版）中国卫星导航系统管理办公室二〇一三年十二月2013中国卫星导航系统管理办公室目录1声明...................................................................................................................12文件范畴...........................................................................................................13北斗系统概述....................................................................................................13.1空间星座.....................................................................................................13.2坐标系统.....................................................................................................23.3时间系统.....................................................................................................24信号规范...........................................................................................................34.1信号结构.....................................................................................................34.2信号特性.....................................................................................................44.2.1载波频率..........................................................................................44.2.2调制方式..........................................................................................44.2.3极化方式..........................................................................................44.2.4载波相位噪声..................................................................................54.2.5用户接收信号电平..........................................................................54.2.6信号复用方式..................................................................................54.2.7卫星信号工作带宽及带外抑制.......................................................54.2.8杂散..................................................................................................64.2.9信号相关性......................................................................................64.2.10星上设备时