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.

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