A High Dynamic Frequency Tracking Algorithm Based on Wigner-Ville Distribution
Qiang Huang · Communications technology · 2010
There exists great Doppler frequency shift under high dynamic circumstances,thus the common GPS receiver could not work reliably without the help of inertial navigation devices.To satisfy the requirements of dynamic performance and tracking accuracy during GPS signal receiving under high dynamic circumstances,a high dynamic frequency tracking algorithm based on Wigner-Ville distribution is proposed according to the theory of time-frequency analysis.Based on analyzing the model of high dynamic GPS carrier phase and the theory of Wigner-Ville Distribution,the implementation of the algorithm is presented.The simulation results show that the algorithm could track the dynamic signal of GPS receiver in high dynamic and low SNR circumstance.