中文说明：对初级通道为一个FIR数字滤波器进行辨识，并且可以消除信号中的噪声，增强信噪比，并在最后画出收敛曲线、误差岁迭代次数的变化、辨识结果，可以改变步长观察收敛的不同。
English Description：
Identify the primary channel by FIR filter. It can also be used to reduce the noise in the signals and enhance the singal to noise ratio. Then draw ou the convergence curves, variation of error age interations and result of identification, thus chaning the step to obserce the difference of convergence