Abstract:Due to the inconsistency in symbol rate and count between the hopped signals, especially with few symbols in low-speed hops, it is difficult to extract clock errors. To address the clock synchronization challenge of frequency hopping signals under high dynamics, a method based on frequency offset estimation for clock offset feedback adjustment is proposed. By estimating the frequency and clock offset through synchronization sequences and adjusting the clock offset and clock tracking through feedback methods, high-precision clock synchronization is achieved. Simulation results show that this method is suitable for ultra-high dyna-mics with flight speeds up to 7.9 km/s and accelerations of 0.2 km/s², exhibiting superior timing synchronization performance. The timing accuracy meets the requirements for high-speed frequency hopping signal demodulation, with demodulation loss less than 0.1 dB.
