主要是关于GPS卫星C/A码信号的产生、捕获以及跟踪的S曲线图，还有科斯塔斯环的一个实例。-Mainly on the GPS satellite C/A code signal generation, capture and track the S curves, there is an instance of Costas Loop.

costas环matlab仿真程序，用于载波恢复，能够达到很好的效果。-matlab simulation program costas loop for carrier recovery, to achieve good results.

本文详细的介绍了一个数字科斯塔环的具体实现，并且附有matlab仿真代码，基于AM调制，以及希尔伯特变换-This paper introduces a concrete realization of digital Costas loop, and with matlab simulation code, based on AM modulation, as well as the Hilbert transform

科斯塔斯锁相环的代码,用matlab编写,原理清楚,对于初学者很有帮助-Costas loop code, prepared by matlab, the principle clearly helpful for beginners