本文以GPS中频数字信号的仿真为目标,以Matlab/Simulink为平台,对真实环境

下中频信号的生成算法!接收算法进行了研究和仿真实现"论文详细论述了GPS中频

数字信号的数学模型!导航信号的误差模型,和信号仿真时应注意的关键问题,给出了

中频信号软件模拟器结构"同时,论文对中频信号的接收算法也进行了简单的研究,并

用仿真生成的数字中频信号对软件接收机的捕获和跟踪性能进行了验证"实验结果表明

该系统基本实现了GPS中频信号的产生和接收功能,接收端能正确解扩解调,能在一

定精度下得到伪码初始相位和载波频率"

-GPS IF digital signal simulation in Matlab/Simulink platform, the paper discusses in detail the mathematical model of the GPS IF digital signal received IF signal generation algorithm in a real environment! Algorithm research and simulation! Navigation error model of the signal, and the signal simulation should pay attention to the key issues, given the structure of the IF signal simulator software the same time, the paper also the IF signal reception algorithm simple, and digital IF signal generated by the simulation software The receiver acquisition and tracking performance is verified experimental results show that the system is the basic realization of the GPS IF signal generating and receiving functions, the receiving side can correctly despread demodulation, the initial phase and carrier frequency of the pseudo-code can be obtained under certain precision "