diff --git a/Signal.m b/Signal.m
new file mode 100644
index 0000000000000000000000000000000000000000..5cf2285f32d2e001fbdc77152375958403974eff
--- /dev/null
+++ b/Signal.m
@@ -0,0 +1,8 @@
+function[E1,E2,E3] = Signal(f,v,c,d,L,t)
+% E1 Φ±ΙδΎ¶
+% E2 ·΄ΙδΎ¶
+E1=cos(2*pi*f*((1-v/c).*t-d/c))./(d+v.*t); 
+E2=cos(2*pi*f*((1+v/c).*t-(2*L-d)/c))./(2*L-d-v.*t);
+E3=2*sin(2*pi*f*(v*t/c+(d-L)/c)).*sin(2*pi*f*(t-L/c))./(d+v*t);
+end
+