The Research of GPS Receiver Pseudo-code-track Algorithm

On the analysis of basic principle of DLL,the pseudo-code-track method of the GPS satellite signals is studied thoroughly.For the deficiencies of DLL's tracking the BOC modulation signals,a new pseudo-code-track loop,NELP is analysed and two methods of tracking are simulated in the Matlab environment.The simulation results show that in the BOC modulation signals at the track,NELP tracking loop has a more accurate tracking results than that of the DLL tracking loop.