平流层通信系统的收发链路性能研究  

Linkage performances for communication systems for HAPS

作　　者：程月波[1] 金荣洪[1] 耿军平[1] 刘波[1] 

机构地区：[1]上海交通大学电子工程系

出　　处：《电波科学学报》2005年第5期666-670,共5页Chinese Journal of Radio Science

基　　金：中国电子科技集团预研基金(41501110503)

摘　　要：针对平流层定点信息平台低空试验艇的工作特点,分析了该系统无线数据链路中上下行信道天线收发信号与平台运动方式的关系,分析表明现有天线结构存在传输信号盲区的问题。为此提出了一种基于天线分集的天线收发模型,以改善数据链路性能。该模型实现简单,仿真结果表明该结构可显著提高信噪比并有效消除信号传输盲区,实现信号的可靠传输。From features of airship＇s low altitude test for High Altitude Platform Systems （HAPS）, the relationship between the receiving signal and the path of the platform is analyzed by the sensitivity of the wireless linkage between the platform and its base station. Signal blind areas are found in the analysis. In order to improve the receiving signal level, a simple antenna diversity in the base station is proposed in this paper. This mode is easy to carry out. Simulation results show that it is reliable to eliminate blind areas and improve Signal Noise Ratio （SNR） in low altitude test.

关 键 词：平流层通信 天线 信噪比 飞艇 

分 类 号：TN926.3[电子电信—通信与信息系统]