gps延迟锁定环中对热噪声的模拟，考虑了热噪声对跟踪精度的影响，很不错的-gps delay locked loop in the thermal noise of the simulation, taking into account thermal noise on the impact of tracking accuracy, very good

DCM includes a clock delay locked loop used to minimize clock skew for Spartan-3, Virtex-II, Virtex-II Pro, and Virtex-II Pro X devices. DCM synchronizes the clock signal at the feedback clock input (CLKFB) to the clock signal at the input clock

在matlab与SystemGenerator的平台下实现零阶时延数字正切锁相环。此模块最终能达到与输入信号同频率。-In the matlab, and SystemGenerator the platform, zero-order delay tangent digital phase-locked loop. This module is ultimately to reach input signal with the same frequency.