DONG Dao-peng1,2, HUA Yu1, XIANG Yu1,2, PAN Shu1,2

（1. National Time Service Center, Chinese Academy of Sciences, Xi’an, Shaanxi 710600, China;

 2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China）

Abstract：A simulated model of the digital intermediate frequency（IF）signal processing of high dynamic GPS receiver based on Matlab/Simulink software tools is presented in this paper. This model can be used to perform the tracking and demodulating of the IF signal. The processing results are given in the case of the simulated signal input, which indicates this model is correct and feasible. This model can be used to provide a visible research platform for designing the tracking algorithm of high dynamic GPS signal.

Key words：high dynamic；GPS；Matlab/Simulink software；tracking algorithm