A Tracking Algorithm Based On Vector Carrier Frequency Assist Phase

The traditional GPS receiver in high dynamic environment tracking performance is not ideal, a kind of vector tracking algorithm based on cartier frequency assist phase is proposed, the frequency lock loop and the phase lock loop are used to replace the traditional single tracking loop, the intermediatefrequency signal of each channel receiver is comprehensively processed through the centralized filter, and at the same time, the signal tracking and in tegrated navigation information processing for all visible satellites are achieved. The phase lock loop structure for car rier frequency is given which is suitable for high dynamic environment, the system state equation and measurement e quation of the centralized filter are analyzed in detail, the tracking loop feedback is given, and the tracking perform ance is compared with that of the traditional scalar tracking mode. The simulation results show that the proposed algo rithm has better precision than scalar tracking, which can better handle the high dynamic signal.