为提升复杂环境下网络信道特性的表征能力，设计描述舰船通信网络信号动态变化特性的数学模型。依据坎贝尔定理，通过节点之间的泊松点过程，构建舰船通信网络的信道模型。基于所构建的信道模型，依据Friis公式，引入直射路径的信道衰落、镜面反射路径的信道衰落，以及反射路径的信道衰落构建信道衰落模型。依据网络信号传输状态，考虑信道衰落情况，利用马尔科夫链构建信号传输距离、接收机接收功率、信号接收位置关联的二维传输模型，通过二维传输模型体现舰船通信网络信号的动态变化特性。实验结果表明，该模型能够精确表征复杂环境下的舰船通信网络信号动态变化特性，可以作为提升舰船通信网络质量的重要依据。
The mathematical model of ship communication network signal dynamic change characteristics is studied to improve the characterization ability of network channel characteristics in complex environment. According to Campbell's theorem, the channel model of ship communication network is constructed through Poisson point process between nodes. Based on the constructed channel model, according to Friis formula, channel fading of direct path, channel fading of specular reflection path and channel fading of reflection path are introduced to construct channel fading model. According to the transmission state of the network signal, considering the fading of the channel, the two-dimensional transmission model of signal transmission distance, receiver receiving power and signal receiving position is constructed by using Markov chain, and the dynamic characteristics of ship communication network signal are reflected by the two-dimensional transmission model. The experimental results show that the model can accurately characterize the dynamic characteristics of ship communication network signal in complex environment, and can be used as an important basis to improve the quality of ship communication network.
2023,45(15): 111-114 收稿日期：2023-03-12
DOI：10.3404/j.issn.1672-7649.2023.15.021
分类号：TP393
作者简介：赵琳(1983-),女,硕士,讲师,主要研究方向为数学
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