摘要
GPS信号模拟器的研制涉及到多项关键技术,其中导航电文的产生具有重要意义。该文分析了卫星电文的结构,在此基础上对遥测字和交接字、奇偶校验码、星钟的生成进行研究,利用摄动力方程及拉格朗日行星运行方程推导出星历参数并采用matlab仿真验证了其可行性。
The development of GPS simulator involving to a number of key technologies,in which the generation of navigation message has important significance.Based on analysis of the structure of GPS navigation data,the paper researches the production of star clock and ephemeris parameters extrapolation whose feasibility is verified through the MATLAB finally.
基金
国家自然科学基金资助项目(60902040)
