Abstract:The fast acquisition of BD satellite signal is the key technology to determine the fast positioning of the satellite navigation receiver. Aiming at this technology, a fast acquisition method based on the PSOC platform for the cumulative deceleration and parallel FFT is designed in this paper. The method uses PSOC PL-side logic to realize interactive division of labor and coordination with PS-side timing control, and uses the cumulative speed reduction method to perform parallel FFT calculation on digital baseband signals after frequency reduction, and the BD satellite signals are captured quickly. The design has a compact structure and parallel flow processing, which improves the code running efficiency and reduces the PL-side resource consumption. The simulation was conducted using matrix operation tools and FPGA logic operation tools, and the results showed that the interactive satellite signal acquisition method based on PSOC platform PL and PS can quickly capture BD satellite signals while saving hardware resources.