Study on Carrier Tracking Performance of DS/BPSK Navigation Receiver in the Multipath Environment

The carrier phase tracking performance in the presence of multipath component is researched in the paper for the DS/BPSK navigation receiver. The pseudonoise (PN) code tracking loop of the receiver adopts the noncoherent delay lock loop (DLL), and the influence of multipath on the carrier phase tracking error is analyzed. The hardware implementation of the signal carrier tracking scheme is provided, and the mathematics mode of the carrier phase tracking loop is presented. The relation of multipath code delay and multipath carrier phase delay is analyzed. Based on the analyses of carrier phase tracking model in multipath propagating environments, the paper gives some simulations of the carrier tracking loop performance, and builds up the carrier tracking loop though the Simulink of Matlab.