本程序是用matlab程序语言编写的costas环仿真程序，并对于模拟的costas环的性能进行了分析，costas环主要用于载波同步，本设计实现了对于载波频率跟踪的实现，并且给出图形对比-The program is written in matlab program costas loop simulation program, and the simulated performance of costas loop analysis, costas loop is mainly used for carrier synchronization, the design achieved the realization of the carrier frequency tracking, and gives graphic correlation