基于ITM模型的海上移动信道传输模型  

Maritime mobile channel transmission model based on ITM

作　　者：赵雨薇[1] 迟迅[1] 任佳[1] 

机构地区：[1]海南大学信息科学技术学院,海南海口570228

出　　处：《电子技术应用》2014年第7期106-108,111,共4页Application of Electronic Technique

基　　金：国家自然基金(61162010);国家科技部科技计划项目(S2013HR0034L)

摘　　要：针对海上复杂多变的电磁环境所导致的移动信道的传输路径损耗特性,提出Irregular Terrain Methodology(ITM)改进模型。该算法通过补充双径模型,来计算1 km范围内的海上移动信道传输损耗;通过加入雨衰模型来对出现下雨的海上电磁波传播进行修正;在此基础之上,采用仿真软件对ITM模型和改进后的ITM模型进行对比,分析发现,在海上移动信道传输下,该改进后的ITM模型较之ITM模型,能够更好地反映远海区域移动信道传输特征,并能够提高远海区域移动信道传输的质量。Aiming to characteristics of transmission path loss in mobile channel which is caused by complex electromagnetic, environment on an open sea area, an improved Irregular Terrain Methodology（ITM） model is proposed in this paper. The algorithm first uses a Two-Path Model to calculate the transmission loss in 1 km distance on maritime; Secondly , by adding rain loss, the characteristics of radio wave propagation on an open sea was corrected; Finally, it compares the results obtained by the standard ITM model and improved ITM model on simulation software. The results show that the improved ITM model can better reflect the characteristics of pelagic mobile channel, and can improve the quality of mobile channel transmission compared with standard ITM model.

关 键 词：衰落 路径损耗仿真 海上移动通信 无线电波传播 

分 类 号：TN919[电子电信—通信与信息系统]