水下北斗导航星历及历书无线加注系统设计

摘要

为提高北斗卫星导航定位模块的首次快速定位能力,设计了水下北斗导航历书与星历无线加注测试系统.对比分析了不同技术途径的优缺点,给出了系统硬件结构设计方案,对系统发射模块中各电路单元的频率和电平进行了分析和规划,系统核心模块功能采用基于FPGA+ ARM的架构实现.通过事先人工加注历书和星历,能有效缩短北斗卫星导航定位模块的首次定位时间.%In order to improve the first time of the rapid positioning ability of Beidou satellite navigation module,this paper designs the wireless link system for underwater Beidou navigation almanac and ephemeris injection.Through comparative analysis of the advantages and disadvantages of different approaches,it introduces the structure of system hardware design.Analysis and planning of the frequency and level system of emission of each circuit unit module are given.The core module of the system is implemented based on FPGA+ARM architecture.Through the pre manual filling almanac and ephemeris,it can effectively shorten the first time to position for the Beidou satellite navigation and positioning module.