Propagation Loss for Radio Wave over Rough Sea Surface with An Knife edge Obstacle

To study the influence of rough sea surface and a knife edge on coast radar wave propagation,a reflection coefficient is introduced,which is suitable for rough sea surface,and substitute it into the propagation loss formula for rough sea surface and for a knife edge,respectively.The results show that reflection from rough sea surface is an important factor in calculating propagation loss over rough sea and a knife edge in the presence of rough sea surface.