高动态GPS中频信号仿真及验证

Simulation and Verification of High Dynamic GPS IF Digital Signals

在研究在高动态条件下GPS软件接收机信号处理算法时,需要对高动态GPS数字中频信号进行仿真。本文在分析GPS数字中频信号数学模型的基础上,针对高动态载体接收的GPS信号深入研究,提出了一种高动态信号仿真方法,详细阐述了信号仿真的步骤,在MATLAB上实现了对GPS数字中频信号的仿真,最后在GPS软件接收机上验证了中频仿真信号。检验结果表明,本文提出的仿真方法可以为研究高动态GPS软件接收机算法提供可靠的信号源。

In order to study the high dynamic signal processing algorithm of the GPS software receiver, it is necessary to simulate the digital intermediate frequency （IF） GPS signals. Based on the analysis of mathematical model of the GPS signals, this paper provide a method to simulate the high dynamic GPS IF signals, clarify the procedure of the method, and use MATLAB to simulate the signals. Finally, The GPS software receiver is adopted to validate the signals and the results indicate that this method is able to provide reliable signals for the study of the high dynamic GPS signal processing algorithm.