Development on Fast Carrier Synchronizer for Continuous Wave Mud Pulse Telemetry

A fast carrier synchronizer with adaptive loop bandwidth is proposed for continuous-wave mud pulse telemetry systems, designed to achieve rapid carrier phase recovery and minimal steady-state phase jitter. The proposed synchronizer combines an extended Kalman filter and an adaptive bandwidth switching algorithm, allowing for dynamic loop bandwidth adjustments based on the loop lock state. This results in reduced convergence time during the capture state and decreased phase jitter in the tracking state. Simulation outcomes demonstrate that the proposed approach enhances convergence speed by a factor of ten compared to a conventional phase-locked loop, all while maintaining low residual phase noise.