clear?all;clc;

A=1;f=10*10^6;fs=80*10^6;p=0;n=1024;
t=0:n-1;
st=A*sin（2*pi*f*t/fs+p）;
figure（1）;
plot（st）;
axis（[0?100?-1.5?1.5]）;

stl=inter（st2）;
figure（2）;
plot（abs（fft（stl）））;

b=[0.002535850432321330.001479629963919920.000517685449032382-0.00152092415797089-0.00405040086713680-0.00592701463563038-0.00583447547087569-0.002909626456586160.002635786710830520.009208509619790920.01409903340348900.01436682650065680.00811595209900987-0.00429103854797374-0.0196275023286104-0.0322047611962851-0.0353401822252421-0.02351824084514540.005424917160403260.04894193055744180.09979021765655080.1476229273747350.1817331179802280.1940946974337280.181733117980228