中文说明：
一个简单的m序列产生函数，通过调用primpoly获得本原多项式，然后通过移位循环寄存器产生所需要的序列。自相关图形上能看到峰值旁瓣电平(PSL)和积累旁瓣电平(ISL)。
English Description：
A simple m-sequence generating function obtains the primitive polynomial by calling primpoly, and then generates the required sequence by shift loop register. The peak side lobe level (PSL) and the accumulated side lobe level (ISL) can be seen on the autocorrelation graph