摘要
卫星无线信道特性和多波束天线辐射特性影响接收信号的质量,是卫星通信系统设计的重要依据。在分析卫星信道特性、设计单波束天线模型、计算多波束天线覆盖模型的基础上,利用OPNET网络仿真软件对影响接收信号功率的信道模型和多波束天线模型进行仿真研究。仿真结果显示,提出的建模方案能够较准确地计算卫星多波束天线覆盖下,任意经纬度区域受无线信道特性和多波束天线辐射特性影响的接收功率和全网的功率图谱。
Satellite wireless channel characteristics and multi-beam antenna radiation characteristics directly affect the quality of received signals,which is an important basis for satellite communication system design.Based on the analysis of satellite channel characteristics,design of single-beam antenna model and calculation of multi-beam antenna coverage model,the OPNET network simulation software is used to simulate the channel model and multi-beam antenna model that affect the received signal power.The simulation results indicate that the proposed modeling scheme can accurately calculate the received power and the power spectrum of the whole network affected by the characteristics of wireless channel and the radiation characteristics of multi-beam antenna in any latitude and longitude region under the coverage of satellite multi-beam antenna.
作者
熊菊
XIONG Ju(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)
出处
《通信技术》
2019年第2期384-390,共7页
Communications Technology
