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.
作者
包志强
王博
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)
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)
关键词
浮标通信
频率
天线高度
大尺度损耗
场强
buoy communication, frequency, an antenna height, large-scale loss, field
