Carrier phase tracking performance of a digital PLL under low SNR conditions for spread spectrum TT&C links
This paper presents the analysis of the carrier phase tracking performance of a third-order digital phase-locked loop (DPLL) in low signal-to-noise ratio (SNR) spread spectrum telemetry, tracking, and command (TT&C) systems. A signal model is established in the post-despreading period, and the steady-state phase error...