subplot (x,y,z)

hold on

plot (data1(1, f:f + length));

plot (data2(1, f:f + length));

plot (data3(1, f:f + length));

plot (data4(1, f:f + length));

plot (data4 + n(1, f:f + length));

hold off

%%computation

angle(2, f: f + length), detal (3, f:f + length)….frequency);

f2 )fft (sig1);

f3 )fft (sig2);

fn )fft (sig n);

[‥, p1] = max(abs(f1)

[‥, p2] = max(abs(f2)

[‥, p3] = max(abs(f3)

bearing = ata((t3-t2)

end