Research on Capture Algorithm of BeiDou-3 B1C Signal Based on FPGA

With the continuous improvement and development of China’s navigation system, BeiDou Navigation has gradually provided services to the world, from the first BeiDou-1 system to the second system and now to the BeiDou-3 system. The BeiDou-3 system broadcasts several satellite signals with different modulation methods, among which the B1C signal was broadcasted on the BeiDou-3 system as a brand new signal for better compatibility with other navigation systems. The capture technology is very important in the baseband signal processing, and whether the satellite can be captured quickly and effectively directly affects the subsequent signal processing process and thus directly relates to the receiver performance.