海上浮标间多径衰减因素的改进模型  

An improved model on sea buoy multipath fading factors

作　　者：包志强[1] 王博[1] 高帆 BAO Zhiqiang WANG Bo GAO Fan(School of Conmaunicafion and Information Engineering, Xi＇an University of Posts and Telecommtmications, Xi＇an 710121, （~,＇fina The Ninth General Department of the fourth Research Institute, Aerospace Science and Technology Group, Wuhan 430040,China)

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121 [2]航天科工集团第四研究院第九总体部,湖北武汉430040

出　　处：《西安邮电大学学报》2016年第5期11-14,共4页Journal of Xi’an University of Posts and Telecommunications

基　　金：国家自然科学基金资助项目(61271276);陕西省自然科学基金资助项目(2012JQ8011)

摘　　要：为探究浮标天线较低时的通信情况,建立了一种引入地球曲率作为新参量的海上浮标通信模型,并推导出接收场强与地球曲率半径Rc的关系。改进模型中从发射频率和天线高度两个方面,对大尺度损耗和多径衰减的影响进行仿真。仿真结果显示,对于浮标天线高度较低(1m左右)的情况下,地球曲率半径存在对信号传输影响大,并且可以得出信号传输的最大通信距离。To explore the communication condition of the buoy antenna, the earth＇s curvature as a new parameter is introduced to establish the buoy communication model, and the relationship between the received field strength and the earth＇s curvature is derived. Effects on the large-scale losses and strength of the magnetic field are simmulated in the improved model from the transmis- sion frequency and transmitting antenna height. Simulation results show that, where the buoy antenna height is lower （around 1 m）, the existence of the earth＇s curvature has great influence on the signal transmission, and the maximum communication distance between the two antennas is also be calculated.

关 键 词：浮标通信 频率 天线高度 大尺度损耗 场强 

分 类 号：TN911.4[电子电信—通信与信息系统]