美国弗州大学的讲义,用cotas环实现载波恢复

Costas环是用来解调双边带抑制载波信号的,也是二相或四相移相键控信号解调的专用环路-Costas loop is used to double sideband suppressed carrier signal demodulation, and also two-phase or four phase shift keying signal demodulation of the special loop