Analysis of the performance of the code tracking loop of GPS receiver under blanket jamming
LI De-shen · Information technology newsletter · 2011
As a vital kind of man-made threat faced with GPS receiver,blanket jamming influences measurement error of code tracking,even leads to lose lock of code tracking loop.The foundation of the mode of the impact of jamming is very difficult because of complication.Taking example for the familiar DLL of noncoherent early-late processing,the mode of tracking error based on broadband noise jamming,narrowband jamming and CW jamming is founded and the performance of the code tracking loop of C/A code and P(Y)code under blanket jamming are compared.The simulation results indicated a given jamming mode and jamming frequency exert more influence on the performance of the code tracking loop of C/A code and P(Y)code receiver.It is propitious to the choice of jamming means and anti-jamming measure of GPS receiver.