窗函数法设计一个数字带通FIR滤波器，直线阵采用切比学夫加权控制主旁瓣比，仿真图是速度、距离、幅度三维图像。- A window function design FIR digital band-pass filter, Linear array using cut than learning laid upon the right control of the main sidelobe ratio, FIG simulation speed, distance, amplitude thre