海洋表面无线电传播的多跳模型

随着军备竞争与通信技术发展,海洋表面无线电传播技术得到越来越多关注。文章根据针对不同海面表面信号传播折损问题,分别利用菲涅尔原理和Miller-Brown模型建立平静海面与湍流海面表面折损模型,并通过窄角抛物方程进行模型修正海浪阴影效益;并通过两海面模型对比,得出入射角度与平静海面与湍流海面的海面信号折损的差值呈正相关;最后引入信噪比模型概念,得出100瓦高频段恒定载波信号在平静海面多跳模型中最大条数为十次,具有一定的工程实际意义。

With the development of arms competition and communication technology, more and more attention has been paid tothe radio communication technology of ocean surface. In this paper, according to the problem of the propagation loss of different sur-face signals, the surface loss models of calm and turbulent sea surfaces are established using Fresnel principle and Miller-Brownmodel respectively, and the model is used to modify the shading benefit of ocean waves through the narrow angle parabolic equation.By comparing the two sea surface models, it is found that the incident angle is positively correlated with the difference of the signalloss between the calm sea surface and the turbulent sea surface. Finally, the concept about Signal-to-Noise ratio （SNR, S∕N） modelis introduced. It is concluded that the maximum number of strips of 100-watt high frequency constant carrier signal in the multi-hopmodel of calm sea is 10 times, which has certain engineering practical significance.