Anti-rotation GNSS signal tracking algorithm based on symmetric dual antennas.

Due to periodic occlusion caused by rotating vehicles, the antenna cannot continuously receive GNSS signal. At the same time, the Doppler frequency shift caused by rotation also brings additional influence on GNSS signal tracking by the vehicles. This paper proposes a GNSS signal tracking algorithm based on dual antennas. The algorithm realizes the continuous and stable tracking of GNSS signal by signal preprocessing of symmetric dual antenna and joint calculation. Simulation results show that the algorithm can effectively reduce the influence of rotation on GNSS tracking PLL and improve the stability of tracking process.